Listen
Using underwater microphones called ‘hydrophones’ we can record the sounds made by vocalizing dolphins
Whistles
Can you hear the whistles? On a spectrogram these appear as distinct contours like the wave traced in black
Whistles are used for communication and identification between dolphins
Clicks
Dolphins makes echolocation clicks to detect their environment and prey, such as fish.
These high frequency sounds are shown by the black lines on the spectrogram.
