Jono Allen tells PEOPLE exclusively about his mesmerizing career as an underwater photographer, and how one ocean dive with whales changes his life forever ...

A pair of scuba divers have captured amazing footage of marine life by leaving their GoPro on the ocean floor unmanned. Brittany Ziegler, 34, and her best friend Bettina Aelley, 38, have been ...

Divers off the coast of Mexico recently tried to free a humpback whale wrapped up in fishing gear - with a shark in tow, video shows. Conservation officials labeled the undertaking as "dangerous ...

Intense footage posted by diver Timo Dersch shows the moment he encountered two gigantic humpback whales in the freezing waters of Norway.

Marine biologist Carrie Newell photographed four blue whales — the largest animals on Earth — 3 miles off Depoe Bay.

Humpback whales might be a lot smarter than we first thought, scientists have found. These marine giants may create and wield their own tools, according to a new paper in the journal Royal Society ...

A humpback whale was severely injured in Glacier Bay. National Park Service staff say they first saw the injury last Friday, ...

Humpback whale was entangled in rope and anchored to the sea floor off coast of Namibia. Then a dive team rescued it, video shows.

An entangled humpback whale was seen dragging a dead shark by a rope off the coast of Mexico, video shows. Divers attempted to free the marine mammal.

An entangled humpback whale was seen dragging a dead shark by a rope off the coast of Mexico, video shows. Divers attempted to free the marine mammal.

An entangled humpback whale was seen dragging a dead shark by a rope off the coast of Mexico, video shows. Divers attempted to free the marine mammal.

An entangled humpback whale was seen dragging a dead shark by a rope off the coast of Mexico, video shows. Divers attempted to free the marine mammal.