Despite their name, killer whales (orcas) are actually dolphins.

White-sided dolphins seem to help killer whales "scout" and catch Chinook salmon near Vancouver Island, then eat the ...

Off the coast of British Columbia, dolphins lead killer whales to salmon and earn their share of lunch, a new study reveals.

Using drones and cameras attached to the orcas, scientists have finally been able to learn something about the interaction ...

Canadian researchers capture rare video of killer whales and dolphins working together to forage salmon off B.C. coast.

Sarah Fortune, a marine ecologist at Dalhousie University in Nova Scotia, and her colleagues used drones and camera-equipped ...

A new study by WWF into one of the world’s rarest and most threatened species has found two out of three snubfin dolphins in Roebuck Bay near Broome, Western Australia have been injured by boat ...

Researchers from Dalhousie University were trying to study how northern resident orcas find salmon to eat, but they ended up finding an unexpected symbiosis with another species — dolphins.

SAN FRANCISCO (AP) — A California boat captain has captured rare video of a super pod of more than 2,000 dolphins breaching off the coast of Monterey Bay, including the more elusive northern right ...

Three rare marine species were recently spotted off the coast of Thailand during a survey, photos show. Photo from the Thai Department of National Parks, Wildlife and Plant Conservation A trio of rare ...

A quick splash, a sleek fin cutting through the surface, and then—gone. Dolphins don’t perform on cue, but when you spot one, ...

How big they are: From 5 to 32 feet (1.5 to 10 meters) long, depending on the species Dolphins live in almost every ocean, except most tend to avoid the cold waters in the Arctic and around Antarctica ...