A beached fin whale in San Diego was likely the latest victim of a pod of marauding orcas. But the orcas’ presence is actually a sign of a recovering ecosystem.

While nearly all of the whale sharks near La Paz are juveniles, Pancaldi believes that “orcas are smart enough to put down a big whale shark, as well,” such as the 30-foot-long adults she has ...

Rogue orcas are thriving on the high seas—and they’re eating big whales. A fourth type of Pacific killer whale may live miles offshore from California and Oregon, preying on whales, other ...

Killer whales are known as apex predators in the regions they inhabit in each of the Earth's oceans, ... they get quicker access to the aorta by taking a big bite out of the whale shark's underside.