Many mothers will tell you that raising a boy takes a lot more out of you, compared to raising a little girl. The same apparently goes for sea lions too, where male pups stay "mamma's boys" longer and exhaust a lot more of their parent's energy, compared to sea lion daughters.
A hoard of 500 dead sea lions was mysteriously found recently on a Peruvian beach, leaving scientists puzzled.
Sea lions beware, Pacific sleeper sharks may have developed a bigger appetite, new research shows.
Seals and sea lions may be behind human cases of tuberculosis, one of the most persistent and deadliest infectious diseases in the world, according to new research.
A marine mammal rescue group said it is seeing a record number of stranded sea lions and seals along the Northern and Central California coast.