Scientists have documented what might be the first case of friendly interactions between killer whales and smaller cetaceans. Here's what they think is going on.

Various cetacean species are known to inhabit the Hellenic Trench off Greece in the summer, but until now little has been known about their winter whereabouts.

While well-documented in the Northern Hemisphere and Antarctica, much less is known about killer whales (Orcinus orca) in ...

Using sightings over four decades, researchers have pinpointed three main orca habitats off Australia, with key differences ...

A proposal to establish a sanctuary for whales and other cetacean species in the southern Atlantic Ocean was rejected at a meeting of the International Whaling Commission (IWC) on Thursday ...