Lurking around the edges of reefs during the day ... seem to flutter, rather than swim, above the algae-covered coral they commonly graze on. Their gentle disposition disappears, however, in ...

Alex Mustard (UK) shows the biodiversity of a healthy coral reef as ghost gobies swim within the branches of a sea fan. Alex is particularly fond of gobies. These little fish are normally skittish, ...

The ReefLine blends art with ocean conservation, building a new "hybrid reef" just 600 feet off the coast of Miami Beach.

Not far beneath the surface of the Coral Sea, where the Great Barrier Reef lives, parrotfish teeth ... and a 600-pound grouper pulses its swim bladder to announce its presence with a muscular ...