When we picture sea turtles in the wild, it's easy to envision them as armored warriors—their hard, resilient shells serving as near-impenetrable shields against oceanic threats like sharks. These ...

Turtle shells evolved over the course of 300 million years, but self-defense wasn't the initial driver, researchers think.

"This very young juvenile would typically be spending his day eating small crustaceans that thrive in seaweed mats circling the Gulf of Mexico until it is large enough to dive down to the reef," the ...