Killer whales are one of the most intelligent animals; only humans have a larger brain relative to their body size, according ...

Short-beaked dolphins range between 6 feet and 8 feet long and usually weigh around 170 pounds, according to the National ...

In a baffling show of generosity, killer whales across the globe are giving fish to humans—and scientists are racing to ...

A new report from a group of more than 30 experts says a population of endangered killer whales off the coast of British ...

Orcas, or killer whales, are deadly and beautiful apex predators.

A new report from a group of more than 30 experts says a population of endangered killer whales off the coast of British ...

That’s just a few of the many revelations about these majestic ocean mammals that visitors will learn when they explore the ...

A surprising new study now shows that orcas have a softer, possibly even romantic, side as they are caught kissing on film ...

A white whale calf swimming with its mother off Australia created a memorable moment, while a pod of rare Baird’s beaked ...

In a new sign of toolmaking in marine mammals, orcas in the Pacific Northwest were recorded rubbing stalks of kelp against ...

From the entanglement of Shelagh, a critically endangered North Atlantic right whale, to the awe-inspiring appearance of the first blue whale of the season, these events have stunned onlookers and ...

Iceland orcas are unexpectedly swimming with baby pilot whales, but it's unclear why ... and wouldn't be able to see the small pieces of kelp. "I've often observed killer whales rolling around on each ...