Scientists worry about "a cascade of events that will lead to the collapse of entire Gulf species" -- May have pushed a variety of sharks "to their tipping point"

Marine life may suffer long after public forgets oil spill, Tampa Tribune,  November 9, 2010:

[S]cientists and fisheries managers worry it may have sparked a cascade of events that will lead to the collapse of entire Gulf species. ...

[S]ome creatures may be past the point of saving.

Some Gulf species — certain sharks, for instance — were in trouble from overfishing when the Deepwater Horizon well blew, and the effects of all that oil in the water may have pushed them to their tipping point, [William Hogarth, dean of the College of Marine Science at the University of South Florida] said.