Researchers suggest that predation by a subspecies called Bigg's orcas might explain why members of another one, called ...

Two groups of killer whales are engaging in a terrifying, bloody cannibalistic war beneath the ocean’s surface, where gangs ...

Word and photos of Vancouver’s mystery orcas reached marine biologist Emma Luck in Alaska. A year earlier, she had been ...

Two mass strandings involving hundreds of dolphins in Argentina probably happened because the pods were being hunted by orcas ...

The trio of transient orcas spent around four days in the Vancouver, B.C., area and on Wednesday, they were spotted in ...

Orcas appear in Vancouver Harbour from time to time and often delight residents who catch a glimpse of them. But marine ...

Magdalena Arias of Argentina’s National Scientific and Technical Research Council explains, News.Az reports, citing foreign ...

Three orcas turned Seattle’s working waterfront into a whale‑watching hot spot Monday morning, cruising deep into Elliott Bay ...

Orcas don’t have any natural predators, so how did this happen? The tooth marks, it turned out, were distinctive – they were ...

Ask anyone who’s had encounters with killer whales, and they will tell you just how smart they are. Orcas are incredibly ...

A trio of mysterious killer whales spotted in Vancouver Harbour last week has sparked excitement among marine researchers ...