In a rare ocean encounter, two 45-ton whales chase off a whitetip shark to protect a diver from potential danger.

Scientists have spent a lot of time thinking about how the nutrients in whale feces—also known as whale pump —benefit species ...

Colombian marine biologist Fernando Trujillo has spent a lifetime working with the endangered creatures, which offer a window ...

Conservation groups have filed a motion to intervene as defendants on behalf of NOAA Fisheries in a case challenging the agency’s 2008 vessel speed rule protecting North Atlantic right whales from ...

Marine life is flooding New York City’s waterways once again — but the conservation win is having an unfortunate side effect.

Despite their name, killer whales — or orcas — are not whales. Instead, they are part of the closely related dolphin family. Many whale species were hunted for their oil and other body parts ...

Some also live in rivers, including the Amazon River in South America and the Ganges River in India. Dolphins are technically ...

Boaters in the eastern Mediterranean Sea recently happened upon a rare pod of false killer whales, video footage shows. A group of friends were sailing near Tel Aviv, Israel, in the early morning ...

Spectacular drone footage captured Southern Resident Killer Whales as they made their way through the Monterey Bay frolicking and searching for food.

Dolphins are technically classified as whales, but are different from their larger cousins in many ways. The largest dolphin species is the orca, which measures up to 32 feet (9.8 m) long ...