Peru dolphin death 2012 05 14 b

A dead dolphin lying on a beach on the northern coast of Peru, close to Chiclayo, on March 27. Peruvian environment officials have said massive die-offs of dolphins and seabirds on their shores are linked by a virus. But independent scientists say the dolphins show signs of death from swimming too quickly up to the surface — much like the bends suffered by scuba divers — in a panic possibly caused by seismic testing in oil exploration.