Open ocean

The Adelie penguin is the most widespread penguin of the Antarctic coast.

The African penguin is the only penguin that breeds on the African continent.

Albatrosses are ocean-going seabirds.

Anchovies are small schooling fishes.

The Atlantic cod is a cold-water fish of the North Atlantic.

Atlantic mackerel are streamlined schooling fishes of northern seas.

The Atlantic puffin is a small black and white seabird with a bright triangular bill.

The Atlantic salmon hatches in a river, grows up at sea, and returns to the same river to spawn.

The basking shark is a very large fish that gathers small plankton rather than chasing large prey.

The beluga whale is a white toothed whale of Arctic and sub-Arctic seas.

The black marlin is a large predatory billfish of the Indo-Pacific.

The smooth-head blobfish is an Australian deep-water fish with a broad head, loose skin and a tapering body.

The blue dragon sea slug floats upside down at the ocean surface.

The blue whale is the largest animal that has ever lived.

The blue-footed booby is a seabird of the eastern Pacific that dives on schools of small fish.

The common bottlenose dolphin is a social marine mammal with a curved dorsal fin.

The bowhead whale is a heavy Arctic baleen whale that breaks sea ice with its huge arched head.

The colossal squid is a deep-water cephalopod of Antarctic and subantarctic seas.

Copepods are small crustaceans with major roles in ocean food webs.

Elephant seals are large marine mammals.

The emperor penguin is the largest penguin and the only bird that breeds through the Antarctic winter.

The false killer whale is a large black dolphin of warm, deep seas that hunts tuna and squid in pods bound by lifelong ties.

The fin whale is the second longest animal alive and one of the fastest of the great whales.

Flyingfishes escape the water in gliding leaps.

The gentoo penguin is the third largest penguin and the fastest swimmer of the family.

The giant Pacific octopus is the largest octopus.

The giant squid is an elusive deep-water cephalopod with exceptionally long feeding tentacles.

The great auk was a large flightless seabird of the North Atlantic that swam with its wings and caught fish under water.

The great white shark is the largest predatory fish.

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

Hagfishes are jawless marine animals with elongated bodies.

Halibuts are large flatfishes that hunt near the seabed.

Hammerhead sharks have unusually wide heads.

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

Herrings are schooling fishes that connect plankton with larger marine predators.

The Humboldt squid is an active predator of the eastern Pacific.

The humpback whale is a large baleen whale found in every ocean.

Ichthyosaurus was a Jurassic marine reptile with a streamlined body and flipper-like limbs.

The king penguin is the second largest penguin, an orange-throated bird of subantarctic island beaches.

Krill are small marine crustaceans.

The leatherback is the largest living sea turtle.

The leopard seal is a long, spotted seal of the Antarctic pack ice that hunts penguins, seals, fish and krill.

The little penguin is the smallest penguin in the world, a slate-blue seabird of New Zealand and southern Australia.

The loggerhead sea turtle uses powerful jaws to crush hard-shelled prey.

The Portuguese man-of-war is a floating hydrozoan colony rather than a single jellyfish.

Mantas are large rays that filter small animals from seawater.

Megalodon (Otodus megalodon) was a giant extinct shark.

The ocean sunfish has a deep rounded body that appears abruptly shortened at the rear.

Mosasaurus was a large marine reptile of the Late Cretaceous.

The narwhal is an Arctic toothed whale, and the male carries a spiral tusk up to 3 metres long.

Oarfishes are unusually long, ribbon-shaped marine fishes.

The orca is the largest dolphin and the top predator of the sea.

Plesiosaurus was a long-necked marine reptile of Jurassic seas.

Puffins are diving seabirds.

The razorbill is a black and white North Atlantic auk with a deep, blade-like bill.

Sailfishes are predatory billfishes with an exceptionally high dorsal fin.

Salmon include several fishes with different life histories.

Sardine is a common name applied to several small schooling fishes.

Sea cucumbers are elongated marine echinoderms with feeding tentacles around the mouth.

Sea snakes include many marine reptiles.