Coral reef

Marine angelfishes differ from the freshwater aquarium fishes with the same common name.

Barracudas are streamlined predators with conspicuous teeth.

The bigfin reef squid lives in warm coastal waters around reefs and seagrass.

Blennies include many small fishes living close to the bottom.

The blue tang is a brightly coloured Indo-Pacific reef fish.

Boxfishes have unusually rigid bodies.

Butterflyfishes are conspicuous reef inhabitants with flattened bodies.

The clownfish lives inside the stinging tentacles of a sea anemone, which it cleans and defends in return.

Corals include many colonial animals.

The dugong is a large marine mammal that grazes seagrass in warm, shallow coastal water from East Africa to Vanuatu.

The giant clam is a large reef-dwelling bivalve of the tropical Indo-Pacific.

Gobies include many small bottom-associated fishes.

The green sea turtle grazes on seagrass in warm coastal waters.

Groupers are stout predatory fishes with large mouths.

Hammerhead sharks have unusually wide heads.

The hawksbill sea turtle has a narrow, pointed beak and overlapping shell scales.

Lionfishes are striking marine predators with long fin rays and venomous spines.

The mandarinfish is a small, vividly patterned marine dragonet.

Mantas are large rays that filter small animals from seawater.

Mantis shrimps are predatory crustaceans.

Moray eels are elongated marine predators that often shelter in holes.

Nautiluses are shelled cephalopods.

Parrotfishes are reef fishes with fused teeth that form a beak-like structure.

Porcupinefishes can inflate their bodies when threatened.

Pufferfishes include many marine and freshwater species.

Seahorses have an upright posture and a tail that grips supports.

Shrimps have diverse roles on reefs.

Spiny lobsters differ from large-clawed lobsters.

Stingrays are flattened cartilaginous fishes with broad pectoral fins.

Stonefishes are strongly camouflaged marine predators.

Triggerfishes have deep bodies and strong fin spines.

Wrasses include many reef-associated fishes with changing colours and feeding roles.

The yellow tang is a brightly coloured Pacific surgeonfish that grazes algae on reefs.