Bottlenose dolphins communicate through several kinds of
whistles and sounds.
They can even send identity information through such whistles and an amount of
information still unknown to scientists.
What is already known is that these whistles are used to coordinate the pod when
hunting, making feeding easier for them.
It is already known that dolphins teach cultural knowledge to their kids for
surviving and such teaching could be transmitted through the different kinds of communications that dolphins
use.
They also use the burst pulsed sounds to communicate, although there isn't scientific
proof of this.