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General News    H2'ed 6/20/10

New Photos: Suffering Dolphins in Barataria Bay

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Georgianne Nienaber
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> Jerry Moran Dorsal Fin Encrusted with Oil in Barataria Bay

Toxic poisons are stalking the dolphins in Barataria Bay, Louisiana, and no one is discussing or reporting the fact that the oiled mammals are struggling in the waters near Grand Terre Island. There are no published photos or videos that we have been able to find, and no stories that describe the oil-encrusted dorsal fins and odd behavior that suggest an under-reported or deliberately hidden environmental catastrophe.

We were on the water with New Orleans photographer Jerry Moran and Reel Screamers Guide Service on June 11, when we noticed two groups of dolphins. One group was swimming through a bubbling slick consisting of the dispersant COREXIT and oil, and the other was in the shallows and rooting in the mud. Dolphins will dig for flounder on the bottom, so it did not seem remarkable at the time, but we did note that they appeared unusually agitated. The group swimming in the oily dispersant near our boat was sluggish but there was nothing we could do to discourage them from swimming there. Oil was everywhere, above and below the surface, and there was no escape. We shrugged it off, snapped a few photos, and went on to photograph oiled pelicans on Cat Island and Queen Bess.

Jerry MoranOiled dorsal fin
Jerry Moran

We should have taken a closer look.

Moran was going through his photos few days ago and noticed that some of the dolphins we observed had dorsal fins that were completely coated with rusty red oil from the British Petroleum rig explosion.

When we realized what we had discovered, we called Daryl Carpenter, owner of Reelscreamers, and asked him if anyone else had noticed the oiled dolphins or reported it. Carpenter said that news crews had taken video footage, but he did not know if any of the images had been broadcast. So far none of the images have surfaced, and wildlife officials, if they know about this situation, have been mum.

There have been reports that marine animals are trying to outrun the massive river of oil and fleeing to shallow coastal waters. The New York Daily News compared the disastrous situation as akin to "animals fleeing a forest fire."

The BBC and ABC have filed reports and video about Captain Lori De Angelis, who runs dolphin spotting boat charters in the bays near Orange Beach, Alabama. She observed dolphins "acting drunk."

We called "Captain Lori," and told her about the behavior of the dolphins in Barataria Bay. She confirmed that she has been observing similar behavior and that "It is unnerving."

Captain Lori described some dolphins that were sluggish, and others that were "acting hyper and swimming and playing as if it were the last days of their lives."

The fact that their dorsal fins are encrusted with oil could spell an immediate death sentence. The dorsal fin and the fluke (tail) are an important for body temperature regulation., You can find a simple explanation and video here and a more detailed scientific paper here. The bottom line is that the dorsal fin helps to release excess heat from the body. Oil acts like a heat trap and water and air temperatures are climbing in this hot, sticky Louisiana summer.

Benzene is one of the volatile chemicals in crude oil. The dolphins are swimming in it, ingesting it, and it is coating their bodies. Like humans, they are mammals. Toxic chemical exposure is as dangerous to the dolphins as it is to humans. A review of the toxic effects and other characteristics of benzene is available here.

Chronic exposure to benzene can cause ventricular fibrillation, congestive gastritis, toxic gastritis, kidney damage, skin irritation and burns, swelling and edema, vascular congestion in the brain, and lethal central nervous system depression. See this analysis.

Toluene is also a concern. This is the same chemical found in airplane glue and its effects are well known. Inhalation of toluene fumes is not only intoxicating, but in large doses can cause central nervous system depression and death.

As reported in this overview at emedicine:

Acute intoxication from inhalation is characterized by rapid onset of CNS (central nervous system) symptoms including euphoria, hallucinations, delusions, tinnitus, dizziness, confusion, headache, vertigo, seizures, ataxia, stupor, and coma.

Those of us who were on the water last week developed varying cases of headaches, confusion, dizziness, (in my case, vertigo) and nausea. Unlike the dolphins, we were not swimming in the toxic soup or ingesting it. The water is the dolphins' environment. There is no escape from the rivers of oil and dispersants washing into their feeding grounds. We were able to retreat to our terrestrial environment and cleaner air.

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Georgianne Nienaber is an investigative environmental and political writer. She lives in rural northern Minnesota and South Florida. Her articles have appeared in The Society of Professional Journalists' Online Quill Magazine, the Huffington (more...)

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