to communicate with other dolphins
They make the noises from having kinky bum shex and their noses come from your mum.
they can't talk in human language, but they can make weird noises.
make high pitched and attractive noises
Dolphins tend to make a squeak or like a laugh they sound like a baby otter or a chip they also can make like a clicking noise
Through whistling noises
Echolocation does. The dolphins make a series of noises (including clicking and whistles) and it bounces back. They communicate to each other that way too.
They use clickIng noises of different tones and pitches to talk to one another
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 common name for a dolphin call is Echo Location I am not sure wether there are any alternative answers.
I believe that the echolocation in a Dolphin's body comes from it's mouth, they will squeak and whistle and make Dolphin noises and wait for them to bounce back.
they make harsh hissing noises.
dolphins make sort of high-pitched shrieking noises. when they send out their sound waves, the waves bounce off objects near the dolphins and come back to the dolphin, which is how they locate prey without their eyes. this is called echolocation, and is also used by bats. the sounds of dolphins are really quite beautiful if you ever get the chance t ohear them