Other animals including some early humans, non-human primates, sea otters, elephants, and bird species are known to use ...

In May, researchers captured orcas hunting whale sharks in unprecedented detail. Here, see the aftermath: An orca swims with shark carrion in its mouth. For the first time, scientists have ...

An orca hits the whale shark on the side of its head with its body while preying on the fish on May 26. Kelsey Williamson. Sign up for CNN’s Wonder Theory science newsletter.

The adult male killer whale Moctezuma and five other killer whales (two adult females, two juveniles, one calf), in the vicinity of the juvenile whale shark, measuring around 6 meters.

Australian marine scientists say new research documenting orcas using seaweed as a tool for grooming is further evidence of the species’ complex social structures.

And killer whale youngsters are fond of playing kelp keep-away. But what the southern residents are doing with the kelp ...

Orcas were spotted using kelp as a grooming tool on each other, the first known use of tools among cetaceans for something ...

Whale shark numbers are declining worldwide: the docile giants were listed as endangered in 2016. The hunting events in the ...

For the first time, researchers say they have captured footage of killer whales making tools out of seaweed to seemingly ...

An orca hits the whale shark on the side of its head with its body while preying on the fish on May 26. Kelsey Williamson. Sign up for CNN’s Wonder Theory science newsletter.