Orcas, or killer whales, are deadly and beautiful apex predators.

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 ...

Killer whales have been caught on video breaking off pieces of seaweed to rub and groom each other, scientists announced Monday, in what they said is the first evidence of marine mammals making their ...

Add Yahoo as a preferred source to see more of our stories on Google. J17 Princess Angeline, a member of J-Pod in the endangered population of Southern Resident Killer Whales, swims through Haro ...

Killer whales and dolphins have been working together to hunt salmon in the northern Pacific Ocean, an unexpected finding that further reveals the complex social lives of marine mammals. Video cameras ...

Add Yahoo as a preferred source to see more of our stories on Google. Orcas, or killer whales, are deadly and beautiful apex predators. New 'Forbidden Fruits' trailer teases a witchy mean girls ...