Reply #56: Here is one of them: NYT: Spill May Have Taken Its Largest Victim Yet

[Cetacea]

"Over the last weeks, the carcasses of oily pelicans, turtles and other animals have washed to shore in the Gulf of Mexico. Now the first dead whale has been found — a juvenile sperm whale floating 77 miles from the leaking oil well..."

Now, dead whales don't usually float very long as sharks get to them in rapid fashion. Unless of course the sharks are dead. This one was estimated to have been dead for up to one week.

We know of fifty-four dolphin deaths. Whales would be affected by the deep oil plumes more than the dolphins.

And it's all in the wording: From NOAA: Out of fifty-nine dead sea mammals, fifty-four were dolphins. The only two mammals in the gulf are dolphins and whales.
That means four whales have been found dead and nobody has reported it.