Dolphins use a range of "clicks" to communicate with each other. They make these "clicking" sounds using their mouths.
they make sounds
Those include dolphins and whales, and yes, they make sounds.
Because people like to do it to be silly
All dolphins make sounds.
Yes, dolphins are known to make high-pitched sounds such as clicks, whistles, and squeaks. These sounds are used for communication, echolocation, and social interactions among dolphins.
The Amazon river dolphin, or pink river dolphin, Inia geoffrensis, does make sounds and calls.
because they are happy, and need to interact like people do
Dolphins have a vocal range of sounds and each sound means something to the dolphins. People who study dolphins have figured out what some of the "words" are in the sound range. They can mean food or danger and they also express greetings to each other. The sounds are made through the use of the sonar that they use to navigate and is part of the brain.
The sounds of a dolphin are put into three catagories:Whistels, Chirps and Clicks, so nobody really knows the exact number
Urinate in their blowholes!
To warn each other of danger or where a ball of fish are located. I have a film I show my class on dolphins and according to the marine biologist in the film the whistles and sounds they make does seem to make "sentences" to communicate with each other. She is trying to log the various sounds for specific functions.