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

Tractor-trailer-sized waves churned up by Hurricane Lee last week turned several North Carolina beaches into fertile grounds for shell-seekers. The ocean spit out huge numbers of shells, including a ...

Dr. William Reid was 24 and a medical student in Philadelphia when he received a box of sea shells from his great aunt's estate. Included was the shell of a Tiger Cowrie, a common herbivore found in ...