Scientists have documented what might be the first case of friendly interactions between killer whales and smaller cetaceans.

Orcas were spotted using kelp as a grooming tool on each other, the first known use of tools among cetaceans for something ...

A man from Hawarden has captured video footage of dolphins swimming up close to his boat off the Abersoch coast - watch it here.

A man from Hawarden has captured video footage of dolphins swimming up close to his boat off the Abersoch coast - watch it ...

Fifty years after "Jaws" was released in the theaters, the power of sharks in our imagination remains undimmed.

Looking to experience the best of Washington's beautiful summer? Sign up for this incredible tour of Bellingham's bay!

A humpback whale stays by the side of a whale entangled in fishing gear. He spent more than five hours by her side, swimming below her and raising her to the surface to breathe. Photograph By Dan ...

A worker with the Department of Environmental Protection was killed Saturday morning in a "large" explosion while working on a docked boat in the Hudson River, the agency and the FDNY said.