From playful and delicate marine life to dramatic encounters with powerful predators, these winning photos capture remarkable underwater wildlife.

A charming image of two southern elephant seal pups in a Falklands rock pool has earned Australian photographer Matty Smith ...

Explore the darkest corners of the abyss with 18 terrifying creatures found at the bottom of the ocean. These are Earth's ...

Saint Ignatius of Loyola once said, “The safest and most suitable form of penance seems to be that which causes pain in the flesh but does not penetrate ...

Sperm whales are the largest toothed predators on Earth and among the deepest divers in the animal kingdom. These giants ...

Scientists studying stranded pygmy sperm whales have uncovered three previously unknown genotypes of Helicobacter bacteria ...

Sperm whales have the largest brain of any living animal, weighing up to 9 kilograms (nearly 20 lbs), a key reason scientists believe they possess advanced communication and social intelligence. They ...

Scuba diving in the ocean can be an otherworldly experience, as can the marvels waiting to be discovered. Imagine swimming along and being approached by a massive sperm whale, who furthermore would ...

Results of a partial necropsy and tissue tests taken from the sperm whale that washed up on Nantucket's south shore late last ...

The Mediterranean Sea is home to some of the ocean's largest animals. Among the nine species of cetaceans commonly found along its western shores are the fin whale (Balaenoptera physalus, the world's ...

A group of sperm whales surrounds a diver when a nearby shark appears, creating a remarkable encounter captured during an ocean dive.