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 ...

The most recent data from NOAA shows a major decline in gray whale populations compared to a year ago. Here's what to know.