The killer whale pod in Mexico hunts and attacks much larger whale sharks by targeting them from below, a study finds Kelsey Williamson Orcas — also known as killer whales — are once again on the ...

Whale watchers in Madeira captured the astonishing moment orcas took down the deep-diving marine mammal. The predatory ...

The orca who swam with her dead calf for 17 days in an apparent act of grieving recently gave birth to a new baby, according to Michael Weiss, research director of the Center for Whale Research. The ...

For the first time in half a century, a group of killer whales, or orcas, returned to a cove in Washington's Puget Sound. Penn Cove is known for a roundup by hunters that took place in the 1970s. For ...

A killer whale mom, who shot to fame after she carried her dead calf’s corpse with her for more than two weeks in a harrowing tale of grief, has lost another baby, scientists revealed. The orca, ...

Orcas have long been revered for their intelligence, adaptability, and group-hunting strategies. But one scientific review spanning two decades has revealed a little-known, yet intriguing behavior.

An orca was seen balancing a salmon on its head in coastal waters in Washington state. Orcas were previously observed doing the same thing in the 1980s. It’s not clear what the behavior means.

A federal judge has awarded an environmental group more than $1.6 million for prevailing in a lawsuit against Endangered ...