A stock photo shows a whale fluke surrounded by plastic bottles. Whales and dolphins are now partly made of plastic due to pollution in the ocean, according to a new study.

A pod of dolphins led a whale and her calf back to their migration route after they became lost and distressed, a heartwarming video shows.

Whales and dolphins. Whale songs, beaching, endangered status -- current research news on all cetaceans.

Baleen whales don't have teeth, but they and dolphins share a common ancestor, and both rely on complex vocal communication in a dark underwater environment.

An assessment says whales, dolphins and seals living in U.S. waters face major threats from the warming ocean temperatures linked to climate change.

Orcas, also known as killer whales, are not whales at all. They're actually part of the Delphinidae family and are the largest dolphin in the sea.

Cetaceans, the infraorder of aquatic mammals consisting of whales, dolphins, and porpoises, are some of the most unique animals on earth, but they are also some of the most endangered. Cetaceans ...

There have been increased calls for the French government to re-home two killer whales and 12 dolphins that were left behind at Marineland Antibes. The marine park in France closed its doors in ...

The Maui News A new tool that uses facial recognition technology to identify individual whales and dolphins in the wild across 24 species will help management and conservation efforts for marine ...

From the surface, scientists have seen playful encounters between dolphins and whales. In a 2010 article in Aquatic Mammals, researchers described two instances near Hawai'i where humpback whales ...

If Gary Larson's The Far Side loves one thing, it's nature, and that obsession with flora and fauna doesn't stop at the shoreline.