How do dolphins talk to each other?

Dolphins use special sounds to talk underwater. Every dolphin has its own whistle, just like our names. This sound is called a 'signature whistle'. A dolphin makes this sound to tell other dolphins 'I am here'.

Dolphins also make fast clicking sounds. These sounds help them understand things around them. The sounds hit things in the water and bounce back, and the dolphin uses this echo to know where a fish or a rock is.

Dolphins don't just talk with sound. They also talk with their bodies. They send messages by slapping the water, touching each other, or jumping. This way, they talk with both sounds and movements.