Hawaii’s coastal waters are known for humpback whales, spinner dolphins and monk seals, but killer whales rarely make the ...

When orcas, also known as killer whales, interact with a boat, they generally do not display aggressive behavior or any ...

Northern Resident killer whales off British Columbia have been recorded going quiet during salmon hunts, apparently listening ...

Researchers recently published a study tracking the presence of killer whales in Washington waters, such as Puget Sound and ...

Sightings are up across the inland Puget Sound area and the Salish Sea, including in Bellingham Bay.

For the last five-plus years, killer whales have been ramming – and in some cases sinking – expensive yachts, sailboats and fishing boats in the crystalline waters off the coasts of Spain, Portugal, ...

A new study says West Coast transient killer whales, also known as Bigg's killer whales, are now being seen in the inside waters of Vancouver Island for about 250 days a year on average.

MORE killer whales are being spotted are being spotted near a UK tourist hotspot – but scientists are baffled as to why.

Add Yahoo as a preferred source to see more of our stories on Google. Researchers document a behavior called "allokelping" in which one killer whale uses kelp to massage the back of another killer ...

The species Orcinus orca, generally known as orcas or killer whales, is made up of many genetically distinct populations called ecotypes. Each ecotype indicates an ecological specialization with its ...

Whale sharks are gentle, filter-feeding giants, but orcas in Mexican waters were documented attacking the animals and devouring their livers. By Jason Bittel Off Baja California in Mexico, a killer ...