The world’s largest known prehistoric sea turtle, Archelon could grow to be up to 15 feet long and weigh as much as 3.5 tons, according to the news release.

Between interesting rocks, sea glass – especially the elusive purple and blue pieces – or beautiful shells (but leave the occupied ones behind), and even fossils, there's plenty for keen-eyed ...

Rhode Island beaches offer a variety of finds for beachcombers, including sea glass, shells, rocks, and even fossils. Popular spots include Sachuest Point for rocks and shells, Barrington Town ...

The fossils indicated that it possessed a smooth carapace similar to leatherback turtles, with the shell itself about 7.7 feet (2.35 meters) long and 7.2 feet (2.2 meters) wide.