Parrotfish often chomp on rocks and crunchy coral exoskeletons. When they ingest this hard material, it must go somewhere. But where? While relaxing on an endless white, sandy beach might be your idea ...

"The ocean connects us all. Protecting it is our shared responsibility." Officials launch investigation after making ...

Pennekamp State Park—the nation's first coral-reef santcuary—protects a thriving ecosystem beneath the waves ...

Getty Images/iStockphoto While studying coral reefs in the South China Sea ... Gaillardiellus magiruber’s exoskeleton changes ...

Coral reefs are made up of colonies of hundreds to thousands of tiny individual corals, called polyps. These marine invertebrate animals have hard exoskeletons made of calcium carbonate, and are ...