
Orcas make seaweed tools in order to scratch each other’s backs, a study has suggested.
The animals, also known as killer whales, were observed detaching lengths of seaweed and massaging each other with it.

Orcas make seaweed tools in order to scratch each other’s backs, a study has suggested.
The animals, also known as killer whales, were observed detaching lengths of seaweed and massaging each other with it.