The wildlife is not the major concern.
People are going to die. Read the article posted above.
Censored Gulf eyewitness testimonies of coughing up blood and other horror stories
http://www.freerepublic.com/focus/f-news/2562673/posts
Millions of birds and turtles die naturally during the same period of natural causes. Far more live because of man's conservation intervention than have died because of the oil.