Report warns that 14 species are still struggling from the 2010 disaster. Corexit is not only toxic to marine life on its own, but when combined with crude oil, the mixture becomes several times more toxic than oil or dispersant alone.
Corexit, has produced a “massive die-off” of foraminifera, microscopic organisms at the base of the food chain & plankton have either been killed or have absorbed dangerous compounds called polycyclic aromatic hydrocarbons (PAHs) before being consumed by other sea creatures.
Christine Dell’Amore with
National Geographic on April 8, 2014 reports how bad things still are:
Four years after the biggest oil spill in U.S. history, several species of wildlife in the Gulf of Mexico are still struggling to recover, according to a new report released today.
In particular, bottlenose dolphins and sea turtles are dying in record numbers, and the evidence is stronger than ever that their demise is connected to the spill, according to Doug Inkley, senior scientist for the National Wildlife Federation, which issued the report. (See “Gulf Oil Spill: One Year Later.”)
The Deepwater Horizon oil rig exploded on April 20, 2010, killing 11 people and spewing more than 200 million gallons (750 million liters) of oil into the Gulf of Mexico. Since then, various government agencies and nonprofits, including the National Wildlife Federation, have been studying the region’s wildlife to track the impacts of the oil.
The report, a compilation of published science since the spill, reveals that “the Gulf oil spill is far from over,” Inkley said.
“The oil is not gone: There is oil on the bottom of the Gulf, oil is washing up on the beaches, and oil is still on the marshes,” he said.
“I am not surprised by this. In Prince William Sound, 25 years after the wreck of Exxon Valdez, there are still some species that have not fully recovered.” (Related: “Oil From the Exxon Valdez Spill Lingers on Alaska Beaches.”)
However, BP, which operated the now-defunct oil well, claims that the report “is a piece of political advocacy—not science.
“For example, the report misrepresents the U.S. government’s investigation into dolphin deaths; as the National Oceanic and Atmospheric Administration’s own Web site states, that inquiry is ongoing,” BP said in a statement provided to National Geographic.
“The report also conveniently overlooks information available from other independent scientific reports showing that the Gulf is undergoing a strong recovery. Just this week, a study published by Auburn University researchers found no evidence that the spill impacted young red snapper populations on reefs off the Alabama coast.”
Hit Hard
The report examined 14 species that live in the Gulf. Those include:
—More than 900 bottlenose dolphins have been found dead or stranded in the oil spill area since April 2010. If you stretched the corpses lengthwise, that’s 1.5 miles (2.4 kilometers) of dead dolphins, Inkley said. Scientists know that is more than in previous years because they’ve been recording deaths and strandings in the Gulf for a decade.
Ongoing research also shows that dolphins swimming in oiled areas are underweight, anemic, and showing signs of liver and lung diseases. (Related: “U.S. Dolphin Deaths Rise to 300; Cause Still a Mystery.”)
A top predator like the dolphin falling ill is a sign that species further down the food chain are also having trouble, Inkley said.
“When you have sick dolphins, it tells you there’s a problem here and it needs to be investigated.”
—There are five species of sea turtle that live in the Gulf, and all of them are listed as threatened or endangered by the Endangered Species Act. About 500 dead sea turtles have been found in the spill region every year since 2011—”a dramatic increase over normal rates,” according to the NWF. What’s unknown is how many turtles died at sea and were never recovered by scientists.
—An oil chemical from the spill has been shown to cause irregular heartbeats in the embryos of bluefin and yellowfin tuna. That’s a critical stage of development for the fish, so there’s a lot of concern that the damage could cause heart attacks or deaths, Inkley said. (Related: “Odd Animal Deaths, Deformities Linked to Gulf Oil Spill?“)
—Loons, birds that winter on the Louisiana coast, are carrying increasing concentrations of toxic oil compounds in their blood.
—Sperm whales that swam near the BP well have higher levels of DNA-damaging metals in their bodies than in the past. The metals in their bodies, such as chromium and nickel, are the same ones that were present in the well.
Corexit, Oil Dispersant Used By BP, Is Destroying Gulf Marine Life, Scientists Say
David Kirby with Take Part on April 24, 2013 wrote:
After the spill, BP secured about a third of the world’s supply of dispersants, namely Corexit 9500 and 9527, according to The New York Times. Of the two, 9527 is more toxic. Corexit dispersants emulsify oil into tiny beads, causing them to sink toward the bottom. Wave action and wind turbulence degrade the oil further, and evaporation concentrates the toxins in the oil-Corexit mixture, including dangerous compounds called polycyclic aromatic hydrocarbons (PAHs), known to cause cancer and developmental disorders.
When BP began spraying the Gulf, critics cried foul. They said Corexit is not only toxic to marine life on its own, but when combined with crude oil, the mixture becomes several times more toxic than oil or dispersant alone.
[…]many scientists, such as Dr. William Sawyer, a Louisiana toxicologist, argue that Corexit can be deadly to people and sea creatures alike. “Corexit components are also known as deodorized kerosene,” Sawyer said in a written statement for the Gulf Oil Disaster Recovery Group, a legal consortium representing environmental groups and individuals affected by the Deepwater Horizon spill. “With respect to marine toxicity and potential human health risks, studies of kerosene exposures strongly indicate potential health risks to volunteers, workers, sea turtles, dolphins, breathing reptiles and all species which need to surface for air exchanges, as well as birds and all other mammals.” When Corexit mixes with and breaks down crude, it makes the oil far more “bioavailable” to plants and animals, critics allege, because it is more easily absorbed in its emulsified state.
Sawyer tested edible fish and shellfish from the Gulf for absorption of petroleum hydrocarbon (PHC), believed to have been facilitated by Corexit. Tissue samples taken prior to the accident had no measurable PHC. But after the oil spill, Sawyer found tissue concentrations up to 10,000 parts per million, or 1 percent of the total. The study, he said, “shows that the absorption [of the oil] was enhanced by the Corexit.”
In April 2012, Louisiana State University’s Department of Oceanography and Coastal Sciences was finding lesions and grotesque deformities in sea life—including millions of shrimp with no eyes and crabs without eyes or claws—possibly linked to oil and dispersants.
The shocking story was ignored by major U.S. media, but covered in depth by Al Jazeera. BP said such deformities were “common” in aquatic life in the Gulf and caused by bacteria or parasites. But further studies point back to the spill.
A just-released study from the University of South Florida found that underwater plumes of BP oil, dispersed by Corexit, had produced a “massive die-off” of foraminifera, microscopic organisms at the base of the food chain. Other studies show that, as a result of oil and dispersants, plankton have either been killed or have absorbed PAHs before being consumed by other sea creatures.
Hydrocarbon-laden, mutated seafood is not the only legacy left behind by Corexit, many scientists, physicians, environmentalists, fishermen, and Gulf Coast residents contend. Earlier this week, TakePart wrote about Steve Kolian, a researcher and founder of the nonprofit group EcoRigs, whose volunteer scientists and divers seek to preserve offshore oil and gas platforms after production stops, for use as artificial reefs and for alternative energy production.
EcoRigs divers took water and marine life samples at several locations in the months following the blowout. Now, they and countless other Gulf residents are sick, with symptoms resembling something from a sci-fi horror film, including bleeding from the nose, ears, breasts, and even anus. Others complain of cognitive damage, including what one man calls getting “stuck stupid,” when he temporarily cannot move or speak, but can still hear.
“If we are getting sick, then you know the marine life out in the Gulf is too,” Kolian said. The diver and researcher completed an affidavit on human and marine health used in GAP’s report.
Kolian’s team has done studies of their own to alarming results. “We recently submitted a paper showing levels of hydrocarbons in seafood were up to 3,000 times higher than safety thresholds for human consumption,” he said. “Concentrations in biota [i.e. all marine life] samples were even greater.”
Kolian’s friend and colleague, Scott Porter, described in his affidavit to GAP how Corexit had caused dispersed crude to coat the bottom of the sea in a sickening, deadly film. In July 2011, he and other divers traveled to a part of the Florida Panhandle, known as the Emerald Coast for its pristine seawater, to collect samples for the Surfrider Foundation.
“When we went diving, however, the water had a brownish white haze that resembled what we saw in offshore Louisiana at 30 feet below sea level,” Porter’s affidavit stated. “I have never witnessed anything like that since I began diving in the Emerald Coast 20 years ago. We witnessed…a reddish brown substance on the seafloor that resembled tar and spanned a much larger area than is typical of natural runoff.”
In areas covered with the substance, “we noticed much less sea life,” Porter continued. “There were hardly any sand dollars or crabs and only some fish, whereas we would normally see an abundance of organisms. It was desolate.”
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