Ok, this is cool: a team of biologists worked out that turtles can talk. The hatchlings even talk to each other in the egg to coordinate their hatching. Turtle talk is at frequencies not very audible for humans and it can take hours for some species to reply to each other.
“Had we had a bit more expansive imaginations, we might have caught this earlier,” said Karen Bakker, a fellow at Harvard’s Radcliffe Institute for Advanced Study.
#Turtles
https://www.washingtonpost.com/climate-environment/2023/01/06/turtles-eat-south-america/



