Sergio Hanquet / Painted comber (Serranus scriba). Tenerife, Canary Islands.

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.

Alex Mustard / Several mimic goatfish (Mulliodichthys mimicus) hide within a school of Bluestripe snapper (Lutjanus kasmira) on a coral reef. North Ari Atoll, Maldives. Indian Ocean

John Shaw / Yellow-billed cardinal (Paroaria capitata). Pantanal, Brazil, September.

Shane Gross / Schoolmaster snapper (Lutjanus apodus) in red mangrove(Rhizophora mangle) and turtlegrass (thalassia testudinum) habitats, Eleuthera Island, Bahamas.

Juergen Freund / Saddleback clownfish (Amphiprion polymnus) surrounded by marine trash around its anemone home, Sulawesi, Indonesia. November.

Nick Hawkins / Blue-lined snapper (Lutjanus kasmira) shoal. Cocos Island National Park, Costa Rica.

Nick Hawkins / Blue-lined snapper (Lutjanus kasmira) shoal. Near Cocos Island National Park, Costa Rica.

Georgette Douwma / Painted sweetlips (Diagramma pictum labiosum) juvenile. North Sulawesi, Indonesia.

David Fleetham / Saddleback clownfish / Yellowfin anemonefish (Amphiprion polymnus), female, breeding male and non-breeding males with host Leathery anemone (Heteractis crispa). Philippines.