Tourists on a whale-watching boat off Australia witnessed five families of killer whales attack 150-ton mammal.

A massive gang of over 60 orcas was seen brutalizing an endangered pygmy blue whale off the coast of Western Australia by a ...

The episode, witnessed off the Australian coast, offers a rare glimpse into the brutal efficiency of the ocean’s top predator.

Whales are a group of mammals that live in oceans. They include some of the largest animals on Earth. The blue whale is the ... Unlike fish, whales have lungs, not gills. That means they must ...

It is easier for a person ... whales face two challenges: storing enough oxygen to hunt successfully and withstanding the enormous pressure. High pressures change the uptake of gas in the body.