Most marine animals form their shells from calcium carbonate, which is a tough mineral also found in limestone. Some sponges ...

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 Beach ...

SAN JUAN, Puerto Rico— As a result of a petition filed by conservation groups, the U.S. Fish and Wildlife Service has announced that nesting habitat for leatherback sea turtles (Dermochelys coriacea) ...

California officials sent water flowing to create new wetlands along the shores of the shrinking Salton Sea. The project is intended to control dust and provide habitat for fish and birds. Gov. Gavin ...

Undersea agriculture. Deep sea mining. Human colonies on the ocean floor. These were the dreams of Capt. George Bond, a Navy medical officer. It was the age of exploration. While NASA made front-page ...