Michael Pitts / Maldives anemonefish (Amphiprion nigripes) and Surgeonfish (Acanthurus) swimming in a strong current, with moving anemones (Actiniaria), Maldives, Indian Ocean.

Alex Mustard / Portrait of pair of Bohar snappers (Lutjanus bohar) in their spawning aggregation. Shark Reef, Ras Mohammed Marine Park, Sinai, Egypt. Red Sea.

Alex Mustard / Portrait of Bohar snappers (Lutjanus bohar) in its spawning aggregation. Shark Reef, Ras Mohammed Marine Park, Sinai, Egypt. Red Sea.

Franco Banfi / Diver with rebreather inside sea cage used for aquaculture with thousand of Gilt-head bream (Sparus aurata) Ponza Island, Italy, Tyrrhenian Sea, Mediterranean. Model released.

Franco Banfi / Diver with rebreather inside sea cage used for aquaculture with thousand of Gilt-head bream (Sparus aurata) Ponza Island, Italy, Tyrrhenian Sea, Mediterranean. Model released.

Franco Banfi / Thousand of Gilt-head bream (Sparus aurata) inside a sea cage used for aquaculture, Ponza Island, Italy, Tyrrhenian Sea, Mediterranean

Franco Banfi / Fish farm net of sea cage with thousands of Gilt-head bream (Sparus aurata) Ponza Island, Italy, Tyrrhenian Sea, Mediterranean

Pascal Kobeh / Close-up of a school of bluestriped or boar grunts (Haemulon sciurus) Yucatan peninsula, Mexico, Caribbean.

Shane Gross / Nassau grouper (Epinephelus striatus) juvenile sheltering in Red sponge (Porifera sp) colony. Eleuthera, Bahamas.

Shane Gross / Schoolmaster snapper (Lutjanus apodus) shoal sheltering amongst Red mangrove (Rhizophora mangle) roots. Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / Caribbean reef shark (Carcharhinus perezi) patrolling coral reef with Schoolmaster snapper (Lutjanus apodus) and other fish. Caribbean Sea off Gardens of the Queen National Park, Cuba.

Pascal Kobeh / Group of sand steenbras / Striped seabreams (Lithognathus mormyrus) eating, Canary Islands