Once thriving, there are now believed to be just 73 Southern Resident killer whales left in Washington state's Puget Sound.

Orcas have been spotted giving each other rubdowns with kelp tools, rubbing pieces of the seaweed between their bodies.

Prior to this instance, the “tongue-nibbling” had only been observed a handful of times in captivity. First seen in captive ...

Researchers have documented orcas dropping prey and other marine life in front of humans, as if offering us food. The orcas' ...

Orcas are brilliant creatures. Their brains are highly developed when it comes to problem-solving skills, cognition, and ...

Under the terms of a settlement agreement, there could soon be new federal protections for the Chinook, the largest of all ...

TACOMA, Wash. — A pod of orca whales was spotted playing in Commencement Bay near Tacoma. Video shared with KOMO News by ...

The Oregon Department of Fish and Wildlife is developing a plan to protect Southern Resident orcas, which were added to the ...

They amuse us by wearing salmon hats, enrage us by sinking our expensive yachts, and now they have been documented sharing their meals with us – why?

Orcas were spotted using kelp as a grooming tool on each other, the first known use of tools among cetaceans for something ...

The discovery — published June 23 in Current Biology — constitutes the “first evidence” recorded of tool-making by marine ...

Slow-motion review showed three distinct bouts: 10 seconds, twenty-six seconds, and eighteen seconds. Between bouts the ...