Polar bear researchers with the U.S. Geological Survey are only halfway into their annual survey in Alaska and they've already come across nine bears – six in Barrow and 3 in Kaktovik – with signs of alopecia and skin lesions. The muzzle, face, eyes, ears and neck appear most affected, according to a bulletin published Friday by the agency.

According to a report from Peru 21, local fishermen in Lambayeque, north Peru, were first to notice the inexplicable rise in dead dolphin appearing on shore -- averaging roughly 30 per day.

Unknown seal pup found near Port Heiden.

Scientists say they've been unable to solve the mystery of dead seals that washed ashore in Labrador between December and January.