MARINE RIFE

Dr. Brian Stacy, a veterinary pathologist, examines a perished sea turtle.

Scientist are investigating if oil is the culprit for all the deaths of the marine life around the Gulf.

The New York Times details:

Despite an obvious suspect, oil, the answer is far from clear. The vast majority of the dead animals that have been found — 1,866 birds, 463 turtles, 59 dolphins and one sperm whale — show no visible signs of oil contamination. Much of the evidence in the turtle cases points, in fact, to shrimping or other commercial fishing, but other suspects include oil fumes, oiled food, the dispersants used to break up the oil or even disease.

The efforts to finger a culprit — or culprits — amount to a vast investigation the likes of which “CSI” has never seen. The trail of evidence leads from marine patrols in Mississippi, where more than half the dead turtles have been found, to a toxicology lab in Lubbock, Tex., to this animal autopsy room at the University of Florida in Gainesville. And instead of the fingerprint analysis and security camera video used in human homicides, the veterinary detectives are relying on shrimp boat data recorders and chromatographic spectrum analysis that can tell if the oil residue found in an animal has the same “chemical signature” as BP crude.

The results raise questions about oil’s indirect effects. Is crude, for example, responsible for what anecdotal reports say is a steep increase in turtles in Mississippi and Louisiana waters? The population of Kemp’s ridleys has been rebounding thanks to years of protective measures. But some scientists have speculated that the spill is driving wildlife toward the coast, crowding areas where there is more boat traffic and setting the stage for fatal accidents.