deborah giles

Killer whales off the coast of Washington state have been carrying salmon carcasses on their heads for decades, but researchers still don't know why they do it.

Tahlequah - the world famous killer whale mother for the past half month has finally overcome her pain.

Biologist at the Center for Biological Conservation, Deborah Giles, says the mother whale seems to be very upset because she knows her newborn baby dies.