NOAA Fisheries lists orcas as endangered, and part of what's hurting them is the decline of Chinook salmon. So, when the whales go somewhere new, it can be a sign they're adjusting to shifts in salmon ...

Word and photos of Vancouver’s mystery orcas reached marine biologist Emma Luck in Alaska. A year earlier, she had been alerted to a trio of mystery orcas in Turnagain Arm near Anchorage. Orcas are ...

Learn why blue whale calves are prime orca targets and how their massive mothers use slipstreams, allies, and shockwaves to keep them alive.

Two groups of killer whales are engaging in a terrifying, bloody cannibalistic war beneath the ocean’s surface, where gangs of the colossal creatures are attacking and eating each other, scientists ...

A dolphin murder mystery is playing out on Patagonia’s shores: multiple mass strandings, with scores of dolphins washing up for no easily discernable reason. In one such event in 2021, for example, 52 ...

Ask anyone who’s had encounters with killer whales, and they will tell you just how smart they are. Orcas are incredibly intelligent creatures, capable of complex hunting strategies. They also engage ...

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