How big they are: From 5 to 32 feet (1.5 to 10 meters) long, depending on the species Dolphins live in almost every ocean, except most tend to avoid the cold waters in the Arctic and around Antarctica ...

The orca on the left carries kelp in its mouth, allowing the whales to "allokelp," or roll the plant between their two bodies. - Center for Whale Research Editor’s Note: Call to Earth is a CNN ...

Google is harnessing artificial intelligence (AI) to study how dolphins communicate with the ultimate goal of enabling humans to one day talk with them.

Dolphins are among the smartest creatures on the planet, and a new AI model from Google combined with Pixel phones is helping researchers better understand their language -- and even hopefully ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

Behavioral ecologist Michael Weiss was browsing through new drone footage of the orca pods he studies in the Salish Sea when he spotted one of the killer whales carrying something green in its mouth ...