Claudio Contreras / Black grouper (Mycteroperca bonaci) and Caribbean Reef Shark (Carcharhinus perezi), Jardines de la Reina / Gardens of the Queen National Park, Caribbean Sea, Ciego de Avila, Cuba, January

Alex Mustard / Portrait of Blacktip grouper (Epinephelus fasciatus) resting in Barrel sponge (Xestospongia testudinaria) Mabul Island, Sabah, Borneo, Malaysia. Sulawesi Sea.

Pete Oxford / Black grouper (Mycteroperca bonaci) with mouth wide open, Jardines de la Reina National Park, Cuba, Caribbean

Jeff Rotman / Close-up of the eye of a Jewel Grouper / Coral hind (Cephalopholis Miniata) Red Sea, Egypt

Jeff Rotman / Jewel Grouper / Coral hind (Cephalopholis Miniata) with mouth open, Red Sea, Egypt

Fred Bavendam / Banded Reef Cod (Epinephelus fasciatus), Bali, Indonesia

Sergio Hanquet / Canary fish (Epinephelus marginatus) portrait with mouth open. El Hierro, Canary Islands.

Sergio Hanquet / Canary fish (Epinephelus marginatus). El Hierro, Canary Islands.

Shane Gross / Black grouper (Mycteroperca bonaci) above sea floor. Exuma Cays Land and Sea Park, marine protected area, Bahamas.

Magnus Lundgren / Wild Wonders of China / Juvenile grouper with parasite, vertial migration, night, Kenting National Park, Hengchun Peninsula, Taiwan

Shane Gross / Black grouper (Mycteroperca bonaci) with Remora fish (Remora sp). Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / Black grouper (Mycteroperca bonaci) swimming in coral reef. Caribbean Sea off Gardens of the Queen National Park, Cuba.