Freshwater turtles have long been thought of as silent reptiles. But recent research has found that there are in fact 2,122 different sounds made by turtles. These sounds were made in and out of the water, by hatchlings inside and outside of eggs, and mother turtles "talking" to their young, in captivity, in rivers, and really all over.
This is the first evidence of chelonians (turtle species) communicating! I knew my turtle was trying to tell me something!