Recovering populations of killer whales, sea lions and harbor seals on the West Coast have dramatically increased their consumption of chinook salmon in the last 40 years, which may now exceed the combined harvest by commercial ...
Male killer whales are more likely to die if they are not at the centre of their social group, new research suggests.
Jazz musicians riffing with each other, humans talking to each other and pods of killer whales all have interactive conversations that are remarkably similar to each other, new research reveals.
Ancient whales had extremely sharp predator teeth similar to lions, Australian scientists said Wednesday in a discovery they believe debunks theories the mammals used their teeth to filter feed like today's gentle giants.
Animals as different as lions, piranha, killer whales and ants have something in common: they have all evolved the ability to hunt in groups. Group hunting is one of the most fascinating behaviours in the animal kingdom, ...
Endangered killer whales that frequent the inland waters of Washington state are having pregnancy problems because they cannot find enough fish to eat, according to a new study.
The great white shark is one of the ocean's most powerful predators, yet it is sometimes prey for orcas that killed several of the formidable creatures off South Africa's coast this month.
France on Saturday banned the breeding in captivity of dolphins and killer whales under tighter rules that campaigners hope will eventually herald the end of shows involving the animals.
Killer whales are on an unprecedented killing spree in California's Monterey Bay, attacking and feeding on gray whale calves, a marine biologist said.