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View Diary: BP's Gulf of Mexico Disaster ROV #120 - Father's Day on the Gulf Edition (317 comments)

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  •  sea turtles (4+ / 0-)
    Recommended by:
    khowell, mamamedusa, temptxan, Yasuragi

    I think it is probably unfair to blame corexit for the deaths of many adult sea turtles; if anything, it probably helps them.

    Corexit has a very small window of opportunity to kill.  The poison makes the dose.   When first applied to oil, it initially makes the oil ten times more toxic.   But within 4 hours, the oil has dispersed to the point where neither the oil nor the corexit is likely to be toxic.   Further, undispersed oil tends to linger on the surface of the water which is a special location.  Corexit does not bioaccumulate, unlike some of the components of oil.

    Sea turtles go to the surface to breath (where oil forms a film on the surface and turns into mouuse).  Some feed on the grass on the sea floor where some components of the oil settle and have been settling for eons due to natural oil seapage.   Others feed on jelly fish and often mistake plastic trash for jelly fish.  They might mistake "mouuse" or big globs of oil for jelly fish.  Some feed on crustaceans and mollusks which bioaccumulate hydrocarbons from oil.

    Their skin reacts to oil and sloughs off.  Oil messes up their sense of smell.    Oil may affect the symbiotic bacteria in their gut (which is the cause of iguana deaths).  And injested tarballs can compromise their health.

    Just the mechanical properties of "tarballs" or "mouuse" could be an issue.

    http://response.restoration.noaa.gov...

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