Coral reefs are one of the most diverse ecosystems ... which provides a refuge from predation for invertebrates such as crabs, lobsters, sea urchins, brittlestars, and molluscs.

I’d been home for six months when the email arrived: “With the help of photosynthetic algae and guard crabs ... The coral ...

CORAL REEF From the deck of a skiff on the surface ... are hosts of invertebrates—clams, crabs, shrimps, worms, sea cucumbers—of stunning diversity. Add to these the hundreds of new species ...

Not far beneath the surface of the Coral Sea, where the Great Barrier Reef lives, parrotfish teeth grind against rock, crab claws snap as they battle over hiding spots, and a 600-pound grouper ...

The noises of a healthy coral reef – produced by fish, crabs and other creatures – attract coral larvae, encouraging them to settle and repopulate the area. In the U.S. Virgin Islands ...