The gray whales make a remarkable 10,000-to-12,000-mile round trip migration from Alaska to their Mexican nurseries each year ...

Through urine, feces, placentas, carcasses and sloughing skin, whales bring nitrogen and other nutrients from high-latitude areas like Alaska and ... base of the marine food web.

The Sausalito-based Marine Mammal Center is probing the death of a female gray whale that washed up on Black Sands Beach in ...