Alex Mustard / Grooved brain coral (Diploria labyrinthiformis) at night with polyps extended to feed, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea.

Juergen Freund / Brain coral (Diploria labyrinthiformis). Caribbean

Alex Mustard / A Grooved brain coral (Diploria labyrinthiformis) spawning at night, releasing pink and white bundles of eggs and sperm from the polyps within its grooves, East End, Grand Cayman, Cayman Islands, Brit...

Alex Mustard / Grooved brain coral (Diploria labyrinthiformis) close focus wide angle view, East End, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Alex Mustard / Grooved brain coral (Diploria labyrinthiformis) close up view, East End, Grand Cayman, Cayman Islands, British West Indies, Caribbean Sea.

Pete Oxford / Yellownose goby (Elacatinus randalli) in Grooved brain coral (Diploria labyrinthiformis) Bonaire, Netherlands Antilles, Caribbean

Pete Oxford / Grooved Brain coral (Diploria labyrinthiformis) Jardines de la Reina National Park, Cuba, Caribbean

Christian Ziegler / Brain Coral (Diploria labyrinthiformis), Bastimentos Marine National Park, Bocas del Toro, Panama

Pete Oxford / Christmas Tree Worm (Spirobranchus giganteus) filter feeding while attached to Brain Coral (Diploria labyrinthiformis), Bonaire, Netherlands Antilles, Caribbean

Pete Oxford / Christmas Tree Worm (Spirobranchus giganteus) filter feeding while attached to Brain Coral (Diploria labyrinthiformis), Bonaire, Netherlands Antilles, Caribbean

Pete Oxford / Brain Coral (Diploria labyrinthiformis), Bonaire, Netherlands Antilles, Caribbean

Pete Oxford / Brain Coral (Diploria labyrinthiformis) on reef, Jardines de la Reina National Park, Cuba

Pete Oxford / Brain Coral (Diploria labyrinthiformis), Belize Barrier Reef, Belize

Pete Oxford / Brain Coral (Diploria labyrinthiformis), Belize Barrier Reef, Belize

Christian Ziegler / Brain Coral (Diploria labyrinthiformis) and seaweed, Bastimentos Marine National Park, Bocas del Toro, Panama

Pete Oxford / Feather Duster Worm (Sabellidae) filter feeding within Brain Coral (Diploria labyrinthiformis), Bonaire, Netherlands Antilles, Caribbean

Roberto Rinaldi / Close-up of brain coral, British Virgin Islands (BVI)

Roberto Rinaldi / A goby fish (Gobiidae) making its way across the surface of Labyrinthine brain coral (Diploria labyrinthiformis), Belize

Roberto Rinaldi / A goby fish (Gobiidae) making its way across the surface of Labyrinthine brain coral (Diploria labyrinthiformis), Belize

Roberto Rinaldi / Close-up of Labyrinthine brain coral (Diploria labyrinthiformis), Belize

Juergen Freund / Brain coral. Close-up. {Diploria labyrinthiformis} Caribbean