A female narwhal was discovered off Donegal, marking Ireland's first recorded sighting of this Arctic species. Examination ...

Scientists confirmed that West Coast transient killer whales actually form two separate groups split between inner and outer ...

The narwhal is famous for its "unicorn horn," but a recent study suggests these whales might also use their long, spiraled tusks to play!

The killer whales ripped the liver out of a shark and passed it around—only the second time orcas have been seen engaging in ...

A juvenile humpback whale was euthanized nearly two days after it was discovered stranded in an entanglement of fishing line.