Sperm whales, the largest predators of the ocean, dive deep into the abyss, where no human dares to venture, and face off ...

The orca, also known as the killer whale, is one of the most fearsome predators of the ocean. With incredible speed, strength, and intelligence, orcas dominate the seas, preying on everything from ...

Photographer Brian Skerry swims with killer whales ... from humpback whales and sea lions to squid and salmon and even tiny herring. It should be said that there are no reports of orcas killing ...