Dolphin language

This is so cool. A new study found that dolphins call each other by name, building on research that found they refer to themselves by name, too. When they become separated from a dear friend or loved one, dolphins call for them using a whistle--but each whistle is specific to one particular dolphin.

Dolphins have signature whistles that they use to announce themselves to other dolphins--a "Hello, nice to meet you, I'm Brian." Researchers found out that when separated, a dolphin looking for his friend will copy his friend's signature whistle while looking for him. Apparently they only use each other's names in positive interactions, never in aggressive situations. Cute dolphins. We have so much more to learn about them.