Incredible video shows a gang of orcas attacking a lone blue whale off the coast of California.
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Whales are pushing into new territory as the far north warms quicker than the rest of the planet and sea ice retreats.
A new round of U.S. Navy sonar testing off California is poised to harm hundreds of thousands of blue whales, dolphins and other animals.
Five distinct humpback whale populations have been identified in the North Pacific Ocean, in the most comprehensive genetic study of these marine mammals in this region of the ocean yet.
Killer whales that feed on marine mammals may passively listen for the sounds of their prey and then strike in complete darkness, new research suggests.
An elusive North Pacific right whale was spotted in the waters off Victoria, Canada in late October. This is the second sighting this season, the last happened 62 years ago.
Ships and industrial activity is drowning out the noise of whales in certain areas of the British Columbia coast, a new study shows.
Some humpback whales appear to skip the annual commute to Africa and stay behind in Antarctica during the winter months, new research reveals.
A new survey shows that humpback whale numbers in an area off the coast of British Columbia are up, though several threats from shipping and other industries remain.
Finding hidden whale calls in seismic data could answer questions about the effects of underwater blasts.