Killer whales have been caught on video breaking off pieces of seaweed to rub and groom each other, scientists announced ...

Southern resident killer whales are using kelp for what scientists suspect are both hygienic and social purposes.

In the first known toolmaking by a marine mammal, southern residents have been documented detaching lengths of seaweed and ...

For the first time, orcas have been seen making and using tools out of seaweed. The reason? Most likely as a form of social ...

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

What happened to Kamea, the youngest orca at SeaWorld? The theme park says the killer whale has died after a lifetime of ...

A days-old endangered sea creature swam with its mom near Washington.

A study published in the journal Current Biology describes a new example of tool use by a critically endangered population of ...

A new study reveals killer whales fashion kelp into tools and use them to groom each other, a possible first for marine ...

Killer whales "groom" each other using tools made from seaweed, reveals new research. The "incredibly exciting" discovery is ...