NOAA's Response and Restoration Blog

An inside look at the science of cleaning up and fixing the mess of marine pollution

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Oil Spills, Seeps, and the Early Days of Drilling Oil Along California’s Coast

Black and white photo of early oil derricks and piers at Summerland, California, 1902

Some of the earliest offshore oil wells were located at Summerland in Santa Barbara County, California. Shown here in 1902, you can see the early wharves that extended from the shore out to derricks over the wells. (U.S. Geological Survey)

One of the challenges of the 2015 pipeline oil spill near Santa Barbara, California, was distinguishing between oil released from the pipeline and oil released naturally from the many seeps in the area. This challenge could become even more complicated when you consider the history of oil drilling in southern California [PDF] that dates back to the 1860s.

Unless you are a history buff or study environmental pollution, you probably didn’t realize that the beautiful sand beaches of southern California were once home to some of the earliest offshore oil rigs.

Oil seeps both on the shore and in the ocean were clues to the underground oil reservoirs in the Santa Barbara Channel. Even today, natural seeps in Santa Barbara’s Coal Oil Point area release an estimated 6,500-7,000 gallons of oil per day (Lorenson et al., 2011).

Drilling into History

The first offshore wells in the United States were drilled in 1896 in the Summerland region just east of Santa Barbara. Initial wells were built on piers sticking several hundred feet out into the ocean. Over the years, many more wells and offshore platforms were built in the region.

However, oil exploration and drilling was virtually unregulated at the time, and spills were common. California’s first out-of-control oil gusher occurred in February 1892 near Santa Paula, but since no one had a way to store so much oil (1,500 barrels were released per day), much of it eventually flowed into the ocean via the Santa Clara River.

Black and white photo of men building a pier over the ocean to reach oil derricks drilling offshore at Summerland, California, 1900.

A view looking down the Treadwell wharf toward shore and the central portion of the Summerland oil field in Santa Barbara County, California, in 1900. These early oil fields were essentially unregulated, resulting in spills and leaks back then as well as today. (U.S. Geological Survey)

In addition, many of these first flimsy piers and oil platforms at Summerland were destroyed by storms or fires or later abandoned without much thought about preventing spills in the future. The state’s first laws governing oil well abandonment came into place in 1915, in part to protect the oil and gas wells on neighboring properties. (Fortunately, the old and leaky Summerland wells were far enough away from the 2015 pipeline spill location that they didn’t add yet another possible source of oil in the area of the spill.)

By the 1960s offshore oil production began to take off in California, particularly along Santa Barbara County. That is, until January 1969, when Union Oil’s Platform A suffered a blowout six miles off the coast. The result was more than 3.2 million gallons of crude oil were released into the Santa Barbara Channel and on surrounding shorelines.

Public outcry was so great that not only did California ban new leases for offshore drilling in state-owned waters, but it helped catalyze a broader movement to protect the environment and prevent pollution in the United States. Still, natural seeps serve as a reminder of the area’s “Wild West” days of oil exploration.

Seep vs. Spill

Today, the region is much cleaner, but, as we saw after the 2015 pipeline spill at Refugio State Beach near Santa Barbara, that doesn’t mean it’s free of oil, either naturally released or spilled during extraction. While telling the two apart can be complicated, it isn’t impossible.

One clue for distinguishing seep oil from oil coming from production platforms is looking at how “weathered” the oil is. Oil being drilled by a platform is extracted directly from a deep underground reservoir and thus appears “fresher,” that is, less weathered by environmental processes.

The seep oil, on the other hand, generally appears more weathered, having migrated up through the seafloor and ocean depths. Seep oil is more weathered because many of its less stable compounds have been dissolved into the water column, oxidized by sunlight or evaporated into the atmosphere at the surface, or broken down by microbes that naturally metabolize hydrocarbon molecules.

Another method for distinguishing among oils is a process known as “fingerprinting,” which uses analytical chemistry to compare the relative quantities of hydrocarbons unique to petroleum in the spilled oil versus another oil.

Even though seeps release a lot of oil into the ocean, oil spills such as the 2015 pipeline spill near Santa Barbara have different and more significant impacts on the nearshore environment than the slower, steadier release of natural oil seeps. Spills often release relatively large volumes of oil suddenly into an area, which can overwhelm the ability of the environment (such as its oil-eating microbes) to adapt to the influx of oil.

That doesn’t mean seeps don’t have any environmental impacts themselves. Oil from seeps can be toxic to marine life, including fish, sea stars, shrimp, and seabirds, with impacts largely concentrated in the immediate area around a seep. While our job is to use science to minimize and evaluate potential environmental impacts during oil spills (and not seeps), knowing the history of an area like Santa Barbara can go a long way to helping us do just that.

NOAA environmental scientist Greg Baker also contributed to this post.

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Studying Marine Life a Year After the Oil Spill at Refugio State Beach

One year after the pipeline oil spill at Refugio State Beach near Santa Barbara, California, scientists from NOAA and our partners have been back to the site of the spill. They are gathering a new round of samples to help determine the health of the environment and marine life.

This May and June, these teams have been conducting comprehensive scientific surveys to collect data on three distinct but interconnected habitats within the impacted spill zone: sandy beach, subtidal, and rocky intertidal habitats.

Specifically, the surveys are examining:

  • talitrid (beach hopper or “sand flea”) populations in sandy beach habitats.
  • a variety of organisms in rocky intertidal habitat.
  • surfgrass in subtidal habitats.
  • fish, including grunion spawning on the beaches and surfperch in nearshore waters.

Information collected from these sampling efforts will be used to determine the amount of restoration needed to return the environment to the condition it would have been in if not for the spill, and to compensate the public for natural resource injuries and lost recreational opportunities. This is part of the Natural Resource Damage Assessment process, which evaluates the environmental impacts of pollution and implements restoration to make up for those effects.

Ten people stand in the beach surf pulling a seine net to shore.

Scientists pull in a seine net along a beach near Santa Barbara, California, about a year after the oil spill at Refugio State Beach. They are sampling fish known as surfperch to evaluate any impacts from the oil spill. (NOAA)

This pipeline spill occurred on May 19, 2015 and resulted in more than 100,000 gallons of crude oil being released on land, with a portion of the oil reaching the Pacific Ocean. Field teams documented dead fish, invertebrates, and other wildlife in the oiled areas following the spill. The spill also shut down fisheries, closed multiple beaches, and impacted recreational uses, such as camping, non-commercial fishing, and beach visits.

To submit a restoration project idea, please visit: Learn more about spill cleanup and response efforts at

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After Decades of Pollution, Bringing Safe Fishing Back to Kids in Southern California

This week, NOAA’s Office of Response and Restoration is looking at the range of values and benefits that coastal areas offer people—including what we stand to lose when oil spills and chemical pollution harm nature and how we work to restore our lost uses of nature afterward. Read all the stories.

A boy holds up a scorpion fish on a boat.

A boy participating in the Montrose youth fishing program shows off his catch, a scorpion fish, from the Betty-O fishing boat with Marina Del Rey Anglers in southern California. (NOAA)

This is a post by Gabrielle Dorr, NOAA/Montrose Settlements Restoration Program Outreach Coordinator.

Polluted waters and polluted fish seem like obvious (and good) reasons to skip a fishing trip at such a beach, and they are.

For a long time, that was the case for a certain slice of coastal southern California, and those skipped fishing trips really add up. Fortunately, NOAA and our partners are responsible for making up for those trips never taken and do so through the Natural Resource Damage Assessment process.

From the late 1940s to the early 1970s, factories, including one owned by the Montrose Chemical Corporation, released several million pounds of DDT and roughly 256,000 pounds of PCBs through ocean outfall pipes onto the Palos Verdes Shelf off of southern California. These chemicals made their way up the food chain, impacting fish and wildlife, and in turn, people too.

By 1991, the high chemical concentrations in fish prompted the California Office of Environmental Health and Hazard Assessment to issue its first consumption advisory for common sportfish found along the southern California coast.

A boy stands next to a sign warning not to eat contaminated fish, with people fishing off a pier beyond.

Decades of pollution dumped onto the Palos Verdes Shelf off of southern California later led to fish consumption advisories, warning people of the dangers of eating contaminated fish. (NOAA)

At the same time, media reports amplified the message that fish were contaminated in this area, which resulted in a large number of anglers completely shying away from fishing within the contaminated zone—whether the fish they were catching were affected or not. In addition, unaware of the dangers, low-income, subsistence anglers continued to catch and eat contaminated fish.

All of these factors contributed to a measurable impact to these types of fishing opportunities in southern California, prompting the need to restore them.

Connecting Kids with Fishing

Following a natural resource damages settlement in 2000, NOAA’s Montrose Settlements Restoration Program (MSRP) was developed to restore wildlife, fishing, and fish habitat that were harmed by DDTs and PCBs in the southern California marine environment.

In our 2005 restoration plan [PDF], we identified the need for a public information campaign targeted to youth and families, which would help anglers make informed decisions about what to do with the local fish they caught. Our program was also hoping to change the public perception about local fishing by giving anglers information about alternative, safe fish species to catch and consume and which species to avoid.

Starting in 2007, we funded and supported a youth fishing outreach mini-grant program, one of the major components of this campaign. For this program, we teamed up with local fishing clubs, youth groups, environmental organizations, aquaria, and the City of Los Angeles to educate young people and their families about safe fishing practices.

The program focused on three key and seven secondary messages related to recreational fishing in the area and included a hands-on fishing component. Participating groups also distributed our What’s the Catch? comic books [PDF] and fish identification cards [PDF] to youth who took part in the program. Some of the activities included touring a local aquarium to reinforce fish identification and playing interactive games that demonstrated bioaccumulation of chemicals in the food chain.

Since the campaign started in 2007, over 20,000 youth have participated in our fishing outreach program through eight participating organizations. All of these organizations were serving low-income or at-risk youth ages 5-19 years old and included having kids actually fish from either a boat or pier.

Fishing for Information

Starting in 2012, we started surveying youth, teachers, and counselors at the end of each fishing outreach program. Featuring questions such as “Did you enjoy the fishing today?” and “Did you learn how to identify fish which are safe to eat?” these surveys helped us understand whether kids were actually learning the program’s key messages.

A group of kids surround a man filleting fish on a pier.

Staff from the City of Los Angeles show kids how to properly fillet a fish to reduce their intake of contaminants. (NOAA)

We found that the program improved each year. By 2015 at least 86% of youth understood our top three key messages:

  • Fishing is one of the most common outdoor activities in the world, allowing people to make a personal connection with nature.
  • There are many fish in southern California that are healthy to eat.
  • A small number of fish are not safe to eat.

The frequency and type of secondary messages that were taught by our partnering organizations varied among programs. In most cases, programs improved with teaching these concepts each year, with at least 77% of youth understanding most of the secondary messages:

  • DDT and PCB contaminants bioaccumulate up the food chain.
  • DDTs and PCBs, harmful chemicals to wildlife and humans, were dumped into the ocean for more than 30 years in southern California and are still in the environment today.
  • Eating only the fillet and throwing away the insides of the fish is a safe way to eat.
  • Grilling a fillet is the safest way to prepare fish to eat.
  • Look for signs on piers telling you which fish are not safe to eat.
  • All fish are an important part of the ocean ecosystem. If you do not keep a fish for the table, gently return it to the ocean.
  • You play an important role in preserving our ocean resources. Follow fishing rules and regulations to be good ocean stewards.

Feel the Learn

Youth group on board a boat with volunteers from Marina Del Rey Anglers holding up foam board educational signs.

Since the campaign started in 2007, over 20,000 kids have participated in the fishing outreach program through eight participating organizations, all of which worked with low-income or at-risk youth. Here, a group of kids on board a boat with volunteers from Marina Del Rey Anglers show off some of the educational signs used in the program. (NOAA)

We also surveyed third, fourth, and fifth grade teachers that participated in the Fun Fishing Program at The SEA Lab in Redondo Beach, California. Teachers evaluated the usefulness of our comic book and fish identification cards, which they received before their field trip.

At least 96% of teachers surveyed over four years agreed that the comic book presented useful information for their students, captured student’s interests, and was a resource they could easily use in the classroom. For the fish identification card, at least 87% of teachers felt similarly about this educational tool.

We also know that students who participated in the program at The SEA Lab remembered what they learned from their field trip six months later. More than half of the students we surveyed at this later date recalled seven out of 10 program messages correctly and were making healthier decisions when eating fish. Teachers who were also surveyed during this time showed that more than 50% were occasionally teaching concepts related to six of the program messages in their classrooms.

In the final year of this fishing outreach program (due to the full use of funding allocations outlined in the restoration plan), we are planning to support two organizations, The SEA Lab and the City of Los Angeles, in summer and fall 2016.

The program has been hugely successful at improving the health of children and their families and introducing them to the joyful sport of fishing, while showing lasting impacts on teachers and students. This success is due in a big way to the dedication of our many partners and especially those who provided thousands of volunteer hours.

Fishing Outreach Program Partner Organizations:

Cabrillo Marine Aquarium (2007)

The SEA Lab (2007-2016)

United Anglers of Southern California (2009/2011)

Asian Youth Center (2009)

Friends of Colorado Lagoon (2011-2012)

City of Los Angeles-Department of Recreation and Parks (2011-2016)

Marina Del Rey Anglers Fishing Club (2012-2015)

Los Angeles Rod and Reel Club (2014-2015)

Gabrielle Dorr

Gabrielle Dorr is the Outreach Coordinator for the Montrose Settlements Restoration Program as part of NOAA’s Restoration Center. She lives and works in Long Beach, California where she is always interacting with the local community through outreach events, public meetings, and fishing education programs.

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On the Hunt for Shipping Containers Lost off California Coast

Large waves break on a pier that people are walking along.

The M/V Manoa lost 12 containers in stormy seas off the coast of California in the area of the Greater Farallones National Marine Sanctuary. (Credit: Beach Watch/mojoscoast)

On December 11, 2015, the Matson container ship M/V Manoa was en route to Seattle from Oakland, California, when it lost 12 large containers in heavy seas. At the time of the spill, the ship was maneuvering in order to allow the San Francisco Bay harbor pilot to disembark.

The containers, which are 40 feet long and 9 feet wide, are reported as empty except for miscellaneous packing materials, such as plastic crates and packing materials such as Styrofoam. Luckily there were no hazardous materials in the cargo that was spilled.

The accident occurred about eight miles outside of the Golden Gate Bridge in the Greater Farallones National Marine Sanctuary. Three containers have come ashore, two at or near Baker Beach, just south of the Golden Gate Bridge, and one at Mori Point near Pacifica, California. The search continues for the others.

The Coast Guard is responding to this incident with assistance from NOAA, the National Park Service, State of California, and City of San Francisco. The responsible party is working with an environmental contractor to recover the debris and containers. The Coast Guard asks that if a container is found floating or approaching shore to exercise caution and notify the Coast Guard Sector San Francisco Command Center at 415-399-7300.

On December 14, NOAA’s Office of Response and Restoration became involved when the Coast Guard Sector San Francisco contacted the NOAA Scientific Support Coordinator for the region, Jordan Stout. The Coast Guard requested help from the Office of Response and Restoration in tracking the missing containers. Oceanographer Chris Barker is providing trajectory modeling, using wind and current information to predict the potential direction of the spilled containers.

NOAA chart of waters off San Francisco showing where the shipping containers were lost and where three have been found.

A NOAA oceanographer is using wind and current information to predict the potential direction of the spilled shipping containers off the California coast. This information is helping direct search efforts for the remaining containers. (NOAA)

This accident occurred in NOAA’s Greater Farallones National Marine Sanctuary. The Greater Farallones Marine Sanctuary Association Beach Watch program, provided some of the initial sightings to the Coast Guard, and volunteers are doing additional beach surveys to look for debris and more containers. There is a concern that the containers, contents, or parts of the containers could pose a hazard to wildlife through entanglement or by ingestion. There is also concern about the containers potentially damaging ocean and coastal bottom habitats within the marine sanctuary. (Read a statement from the sanctuary superintendent. [PDF])

This incident illustrates another way that marine debris can enter the environment. According to Sherry Lippiatt of the NOAA Marine Debris Program, “This incident is a reminder that while marine debris is an everyday problem, winter storms and higher ocean swells may increase the amount of debris entering the environment.”

To learn more about how storms can lead to increased marine debris, take a look at the recent article, California’s “First Flush”. For information on how citizen science can help in situations like this, see this article about searching for Japan tsunami debris on the California coast.

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In Wake of Japan’s 2011 Tsunami, Citizen Scientists Comb California Beaches Counting Debris

Man with clipboard and bag walking on beach.

A volunteer counts and collects the marine debris washed up at Drakes Beach in the Greater Farallones National Marine Sanctuary. (NOAA)

It all started nearly five years ago on the other side of the Pacific Ocean. A devastating earthquake and tsunami rocked Japan in 2011, ultimately sweeping millions of tons of debris from the coastline into the ocean. But it wasn’t until June the following year, in 2012, that a 66-foot-long Japanese dock settled on the Oregon coast and reminded the world how the ocean connects us.

NOAA’s Kate Bimrose explained how this event and the resulting concern over other large or hazardous items of Japanese debris spurred the start of NOAA monitoring programs on beaches up and down the West Coast and Pacific islands. She coordinates the program that monitors marine debris in the Greater Farallones National Marine Sanctuary off the north-central California coast.

Thanks to funding from NOAA’s Marine Debris Program, the first surveys in this sanctuary near San Francisco took place in July 2012, a month after the Oregon dock made an appearance. No previous baseline data on debris existed for the shores along this California sanctuary. The only way anyone would know if Japan tsunami marine debris started arriving is by counting how much marine debris was already showing up there on a regular basis.

Training a Wave of Citizen Scientists

Graphic showing an example 100 meter stretch of beach with four 5 meter transects.

Following NOAA Marine Debris Program monitoring protocols, volunteers survey the same 100 meter (328 foot) stretch of beach each month, randomly choosing four sections to cover. Next, they record every piece of trash bigger than a bottle cap in those areas. (NOAA)

To find out how much trash and other manmade debris was washing up, Bimrose trained a small group of dedicated, volunteer “citizen scientists” to perform monthly surveys at four regular California beach sites. Three are located in Point Reyes National Seashore and one is in Año Nuevo State Park, but all are fed by the waters of the Greater Farallones National Marine Sanctuary.

Following NOAA Marine Debris Program monitoring protocols, once a month two volunteers head to the same 100 meter (328 foot) stretch of beach, using GPS coordinates to locate it. Next, they randomly pick four sections, each five meters (nearly 16.5 feet) long, to survey that day. This ensures they cover 20 percent of the area each time.

For those areas, the volunteers record every piece of trash they find that is at least the size of a bottle cap, or roughly an inch long. Having this size standard increases the reliability of the data being collected, providing a more accurate picture of what the ocean is bringing to each beach. NOAA is confident that volunteers are able to scan the sand and find the majority of items larger than an inch sitting on the surface of the beach.

Taking Things to the Next Level

Bottle with Asian characters on the cap.

While volunteers occasionally turn up debris bearing Asian characters, no items reported from this program have been confirmed from the 2011 Japan tsunami. (NOAA)

All of the data volunteers gather—from number of items to types of material found—gets entered into a national online database, which will allow NOAA to determine trends in where, what, and how much marine debris is showing up. Leaving the items behind reveals how debris concentrates and persists on shorelines, information which is lost when debris is hauled off the beach.

While gathering this information is useful, Bimrose admitted to one sticking point for her: none of the debris is cleaned up from these four beach locations.

“We want to be able to remove the debris,” she said. “It’s painful for all my volunteers to be out there and record it and not remove it.” However, the good news is that a June 2015 expansion to this monitoring program has added two new beach locations to the rotation, and after volunteers record the debris there, they pack it out. In addition, Bimrose takes out larger groups of one-time volunteers to those locations and trains them on site, creating a broader educational reach for the program.

Bimrose hopes to recruit local school groups as well as businesses to volunteer. Before each survey at the new locations, she introduces the sanctuary and the monitoring program, while passing around mason jars filled with the trash collected at past surveys to give volunteers an idea of what to expect.

These new monitoring sites receive more recreational use than the previous ones, and at least for the one at Ocean Beach, a heavily used shoreline in the heart of San Francisco, that means finding a lot more consumer trash left on the beach.

From clothes and cigarette butts to food wrappers and even toilet paper, the surveys at Ocean Beach are markedly different from those surveys further north at Drakes Beach, the other new site. There, volunteers count and remove mostly small, hard fragments of plastic that appear worn down by sun and sea, indicating the majority of the debris there is brought to shore by the waves, not beachgoers.

Survey Says

Long blue piece of boat insulation sitting on a table.

A volunteer surveying a beach in the Greater Farallones National Marine Sanctuary found this piece of insulation from an elite sailboat that broke apart in San Francisco Bay in 2012. The debris took two months to travel to a shoreline 60 miles north. (NOAA)

After four years of monitoring and roughly 150 surveys, what have they found so far on the north-central California coast? More than 5,000 debris items recorded in all, which, as Bimrose said, is “a good amount but not too crazy.”

Expanding to six survey sites from four only increases what they can learn about debris patterns in this area. As more data roll in, NOAA will able to outline the regional scope of the problem and see patterns between seasons, years, categories, and locations of debris accumulation. One thing that is likely not to change, however, is that plastic debris dominates. It constitutes about 80 percent of the trash found at all sites.

While volunteers occasionally turn up debris bearing Asian characters, no items reported from this program have been confirmed from the 2011 Japan tsunami. Through other partners associated with beach cleanups however, three pieces of Japan tsunami debris have been confirmed in California. The most recent was a large green pallet with Kanji lettering that landed on Mussel Beach just south of San Francisco. The discovery reinforces the importance of continuing to monitor debris along sanctuary beaches and shows us how items can persist in the ocean for years before sinking, breaking up, or landing on shore.

Another unusual example linking a piece of debris to the exact event that released it occurred in 2012. During a training run for the America’ Cup sailing race, an $8 million boat capsized and broke apart in San Francisco Bay on October 16, 2012. Two months later, one of Bimrose’s volunteers discovered a piece of insulation from that boat on a beach about 60 miles north.

Every month, Bimrose tags along with at least one pair of volunteers for their survey of one of the four “survey-only” beach sites. On one such occasion, one volunteer, an older gentleman, brought along his wife, who was puzzled by her husband’s constant chatter about “his” beach. According to Bimrose, a lot of the surveys could be considered rather clean or even monotonous. But even so, after a day walking and counting with him, the volunteer’s wife told her, “I totally get it, why he comes out here and rearranges his schedule to do this.”

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To Bring Back Healthy California Ocean Ecosystems, NOAA and Partners Are “Planting” Long-Lost Abalone in the Sea

This is a post by Gabrielle Dorr, NOAA/Montrose Settlements Restoration Program Outreach Coordinator.

Diver placing PVC tube with small sea snails on the rocky seafloor.

A diver places a PVC tube filled with young green abalone — sea snails raised in a lab — on the seafloor off the southern California coast. (NOAA)

They weren’t vegetables but an excited group of scuba divers was carefully “planting” green abalone in an undersea garden off the southern California coast all the same. Green abalone are a single-shelled species of sea snail whose population has dropped dramatically in recent decades.

On a Wednesday in mid-June, these oceanic “gardeners”—NOAA biologist David Witting and divers from The Bay Foundation—released over 700 young green abalone into newly restored kelp forest areas near Palos Verdes, California. This was the first time in over a decade that juvenile abalone have been “outplanted,” or transplanted from nursery facilities, to the wild in southern California. This ongoing project is a partnership between NOAA, The Bay Foundation, Redondo SEA Lab, The Nature Conservancy, and the California Department of Fish and Wildlife.

Spawned and reared at The SEA Lab in Redondo Beach, California, all of the juvenile abalone were between two and four years old and were between a quarter inch and 3 inches in size. Biologists painstakingly tagged each abalone with tiny identifying tags several weeks prior to their release into the wild.

Leading up to outplanting day, microbiologists from the California Department of Fish and Wildlife had to run rigorous tests on a sample of the juvenile abalone to certify them as disease-free before they were placed into the ocean. Several days before transferring them, biologists placed the abalone in PVC tubes with netting on either end for easy transport.

“This was just a pilot outplanting with many more larger-scale efforts to come in the near future,” stated David Witting from NOAA’s Restoration Center. “We wanted to go through all of the steps necessary to successfully outplant abalone so that it would be second nature next time.”

Marine biologists from The Bay Foundation, along with Witting and other NOAA biologists, will be going out over the next six to twelve months to monitor the abalone—checking for survival rates and movement of the abalone. “We expect to find some abalone that didn’t survive the transfer to the wild but probably a good number of them will move into the cracks and crevices of rocky reef outcroppings immediately,” according to Witting.

Why Abalone?

PVC tube filled with green abalone lodged into the rocky seafloor.

After testing and refining the techniques to boost the population of green abalone in the wild, scientists then will apply them to help endangered white and black abalone species recover. (NOAA)

All seven abalone species found along the U.S. West Coast have declined and some have all but disappeared. White and black abalone, in particular, are listed as endangered through the Endangered Species Act (ESA). Three abalone species (green, pinto, and pink) are listed as Species of Concern by NOAA Fisheries, a designation meant to protect the populations from declining further and which could result in an ESA listing. The two remaining abalone species, reds and flats, are protected and managed by states along the U.S. West Coast.

Historically, the main cause of abalone’s demise was a combination of overfishing and disease. Today, many other threats, such as poaching, climate change, oil spills, and habitat degradation, contribute to the decline of abalone and could impact the health of future populations.

The recent green abalone outplanting was one of the many steps needed to advance the recovery of all abalone species. Methods for rearing and outplanting are first being tested using green abalone because this species is more abundant in the wild. Once the methods are refined, they then will be employed to recover endangered white and black abalone—both species which are currently living on the brink of extinction.

What the Future Holds

A small green abalone eats red algae stuck to a plastic rack.

A young green abalone, reared in a lab in southern California, grazes on red algae. Raising these sea snails in a lab requires a lot of resources, prompting scientists to explore other approaches for boosting wild abalone populations. (Credit: Brenda Rees, with permission)

In particular, biologists are hoping to refine a technique they are coining “deck-spawning” as a way to outplant abalone in the future. Maintaining abalone broodstock and rearing them in a lab requires a lot of resources, funding, and time. This monumental effort has spurred biologists to develop an initially successful, alternate approach, which involves inducing mature, wild abalone to spawn on the deck of a boat.

The scientists then take the viable abalone larvae that develop and release them in a habitat where the young abalone are likely to settle and thrive. Immediately after spawning, the parent abalone can then be returned to the wild where they can continue to be a component of the functioning ocean ecosystem.

The green abalone outplanting project is part of a broader effort to restore abalone but is also playing an important role in work being led by The Bay Foundation with NOAA’s Montrose Settlements Restoration Program to restore southern California’s kelp forests. In southern California, fish habitat has been harmed by decades of toxic pollution dumped into the marine environment. After clearing areas that would be prime kelp habitat if not for the unnaturally high densities of sick and stressed sea urchins, NOAA, The Bay Foundation, and our partners have seen kelp bounce back once given relief from those overly hungry urchins.

While abalone also eat seaweed, including kelp, they are a natural competitor of urchins in this environment and will help keep urchin populations in check, ultimately allowing a healthy kelp forest community to return.

Watch as divers transport the young abalone using PVC tubes and release them on the rocky seafloor off California’s coast:

Gabrielle Dorr

Gabrielle Dorr.

Gabrielle Dorr is the Outreach Coordinator for the Montrose Settlements Restoration Program as part of NOAA’s Restoration Center. She lives and works in Long Beach, California, where she is always interacting with the local community through outreach events, public meetings, and fishing education programs.

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From Natural Seeps to a Historic Legacy, What Sets Apart the Latest Santa Barbara Oil Spill

Cleanup worker and oiled boulders on Refugio State Beach where the oil from the pipeline entered the beach.

The pipeline release allowed an estimated 21,000 gallons of crude oil to reach the Pacific Ocean, shown here where the oil entered Refugio State Beach. (NOAA)

The response to the oil pipeline break on May 19, 2015 near Refugio State Beach in Santa Barbara County, California, is winding down. Out of two* area beaches closed due to the oil spill, all but one, Refugio State Beach, have reopened.

NOAA’s Office of Response and Restoration provided scientific support throughout the response, including aerial observations of the spill, information on fate and effects of the crude oil, oil detection and treatment, and potential environmental impacts both in the water and on the shore.

Now that the response to this oil spill is transitioning from cleanup to efforts to assess and quantify the environmental impacts, a look back shows that, while not a huge spill in terms of volume, the location and timing of the event make it stand out in several ways.

Seep or Spill: Where Did the Oil Come From?

This oil spill, which allowed an estimated 21,000 gallons of crude oil to reach the Pacific Ocean, occurred in an area known for its abundant natural oil seeps. The Coal Oil Point area is home to seeps that release an estimated 6,500-7,000 gallons of oil per day (Lorenson et al., 2011) and are among the most active in the world. Oil seeps are natural leaks of oil and gas from subterranean reservoirs through the ocean floor.

The pipeline spill released a much greater volume of oil than the daily output of the local seeps. Furthermore, because it was from a single source, the spill resulted in much heavier oiling along the coast than you would find from the seeps alone.

A primary challenge, for purposes of spill response and damage assessment, was to determine whether oil on the shoreline and nearby waters was from the seeps or the pipeline. Since the oil from the local natural seeps and the leaking pipeline both originated from the same geologic formation, their chemical makeup is similar.

However, chemists from Woods Hole Oceanographic Institution, the University of California at Santa Barbara, Louisiana State University, and the U.S. Coast Guard Marine Safety Lab were able to distinguish the difference by examining special chemical markers through a process known as “fingerprinting.”

Respecting Native American Coastal Culture

The affected shorelines include some of the most important cultural resource areas for California Native Americans. Members of the Chumash Tribe populated many coastal villages in what is now Santa Barbara County prior to 1800. Many local residents of the area trace their ancestry to these communities.

To ensure that impacts to cultural resources were minimized, Tribal Cultural Resource Monitors were actively engaged in many of the upland and shoreline cleanup activities and decisions throughout the spill response.

Bringing Researchers into the Response

The massive Deepwater Horizon oil spill in the Gulf of Mexico in 2010 highlighted the need for further research on issues surrounding oil transport and spill response. As a result, there was a great deal of interest in this spill among members of the academic community, which is not always the case for oil spills. In addition, the spill occurred not far from the University of California at Santa Barbara.

From the perspective of NOAA’s Office of Response and Restoration, this involvement with researchers was beneficial to the overall effort and will potentially serve to broaden our scientific resources and knowledge base for future spills.

The Legacy of 1969

Another unique aspect of the oil spill at Refugio State Beach was its proximity to the site of one of the most historically significant spills in U.S. history. Just over 46 years ago, off the coast of Santa Barbara, a well blowout occurred, spilling as much as 4.2 million gallons of oil into the ocean. The well was capped after 11 days.

The 1969 Santa Barbara oil spill, which was covered widely in the media, oiled miles of southern California beaches as well. It had such a devastating impact on wildlife and habitat that it is credited with being the catalyst that started the modern-day environmental movement. Naturally, the 2015 oil spill near the same location serves as a reminder of that terrible event and the damage that spilled oil can do in a short period of time.

Moving Toward Restoration

In order to assess the environmental impacts from the spill and cleanup, scientists have collected several hundred samples of sediment, oil, water, fish, mussels, sand crabs, and other living things. In addition, they have conducted surveys of the marine life before and after the oil spill.

The assessment, which is being led by the state of California, involves marine ecology experts from several California universities as well as federal and state agencies.

After a thorough assessment of the spill’s harm, the focus will shift toward restoring the injured natural and cultural resources and compensating the public for the impacts to those resources and the loss of use and enjoyment of them as a result of the spill. This process, known as a Natural Resource Damage Assessment, is undertaken by a group of trustees, made up of federal and state agencies, in cooperation with the owner of the pipeline, Plains All American Pipeline. This group of trustees will seek public input to help guide the development of a restoration plan.

*UPDATED 7/10/2015: This was corrected to reflect the fact that only two area beaches were closed due to the spill while 20 remained open in Santa Barbara.