Amazon river turtles communicate with their hatchlings and with one another using vocalizations, recordings reveal.
Breathing technique may be an important survival mechanism for species such as the Eastern painted turtle and the Australian Fitzroy river turtle.
Sea turtles hatch from nests and go to sea, where they mysteriously seem to disappear for at least two years.
Some of the largest beasts in the ancient seas had black skin or scales, new research finds.
More than 70 million years ago, a baby shark may have bitten off more than it could digest.