Gulf Spill Investigated As Cause Of Dolphin Deaths, NPR, February 25, 2011:
At least two of the dead calves found over the past few days had what looked like oil on their faces.
Mandy Tumlin, the marine mammal coordinator for the Louisiana Department of Wildlife and Fisheries, says those calves were discovered by cleanup crews surveying the beach of Grand Terre Island in southeast Louisiana.
"We're concerned but we really can't speculate. There's a lot of factors that could play a role in an animal's death," she says.
Listen to the audio here.