'What you see above isn't a rural gravel road. It's a Louisiana waterway, its surface completely covered with dead sea life -- a mishmash of species of fish, crabs, stingray and eel. New Orleans CBS affiliate WWL-TV reports that even a whale was found dead in the area. Fish kills are fairly common along the Gulf Coast, particularly during the summer in the area near the mouth of the Mississippi, the site of this kill. The area is rife with dead zones -- stretches where sudden oxygen depletion can cause widespread death. But those kills tend to be limited to a single species of fish, rather than the broad sort of die-off involved in this kill. And therein lies the concern of Gulf residents, who suspect this may be yet another side effect of the catastrophic BP oil spill...Read more: