Marine Mammals

Previous reported interactions between orcas and sailboats followed a clear pattern, with the animals losing interest and swimming away once they had broken the rudder.

A beluga whale that was discovered wearing a suspicious harness in 2019 is on the move in search of other belugas. But it's heading in the wrong direction.

Scientists think a traumatized orca initiated the assault on boats after a "critical moment of agony" and that the behavior is spreading among the population through social learning.

New footage shows, for the first time, how humpbacks scrub off dead skin and parasites to stay streamlined and keep their skin healthy.

A pod of about 30 orcas attacked and "badly wounded" two adult gray whales off the coast of California, according to drone footage.

The mostly white orca calf was spotted by a whale-watching vessel. It most likely has a pigment-related condition called leucism, experts say.

The all-white bottlenose calf, which was swimming with around 200 other dolphins, was spotted by a lucky couple on their wedding day.

Lolita, also known as Tokitae, is returning to the waters of the Pacific Northwest more than half a century after her capture there.

Inbreeding among an endangered population of orcas off the coasts of British Columbia, Washington and Oregon is a cause for concern.