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Habitat

Ocean Animals

Covering over 70% of the planet, the ocean is home to everything from microscopic plankton to the largest animal ever known.

Total Species
11
Endangered or Worse
6
Most Popular
Polar Bear
A photo of Blue Whale (Balaenoptera musculus)
Endangered

Blue Whale

Balaenoptera musculus

Mammal

The blue whale is the largest animal known to have ever existed, filtering enormous quantities of tiny krill from the ocean through baleen plates as it roams every ocean except the Arctic.

A photo of Bottlenose Dolphin (Tursiops truncatus)
Least Concern

Bottlenose Dolphin

Tursiops truncatus

Mammal

The bottlenose dolphin is one of the most widely-recognized and intelligent marine mammals, found in temperate and tropical oceans worldwide.

A photo of Clownfish (Amphiprion ocellaris)
Least Concern

Clownfish

Amphiprion ocellaris

Fish

The clownfish is a small, brightly-colored reef fish famous for its symbiotic relationship with sea anemones, whose stinging tentacles it is immune to.

A photo of Common Octopus (Octopus vulgaris)
Least Concern

Common Octopus

Octopus vulgaris

Marine Animal

The common octopus is a remarkably intelligent, boneless marine invertebrate found in coastal waters worldwide, renowned for its problem-solving abilities and rapid camouflage.

A photo of Leatherback Sea Turtle (Dermochelys coriacea)
Vulnerable

Leatherback Sea Turtle

Dermochelys coriacea

Reptile

The leatherback is the largest sea turtle species in the world and the only one without a hard bony shell, ranging farther into cold water than any other reptile.

A photo of Moon Jellyfish (Aurelia aurita)
Least Concern

Moon Jellyfish

Aurelia aurita

Marine Animal

The moon jellyfish is one of the most common and widely-distributed jellyfish species, drifting through coastal waters worldwide in large seasonal blooms.

A photo of Narwhal (Monodon monoceros)
Near Threatened

Narwhal

Monodon monoceros

Mammal

The narwhal is an Arctic whale famous for the male's long spiraled tusk, which is actually an enormous protruding canine tooth, earning it the nickname 'unicorn of the sea'.

A photo of Polar Bear (Ursus maritimus)
Vulnerable

Polar Bear

Ursus maritimus

Mammal

The polar bear is the largest land carnivore on Earth, superbly adapted to hunting seals across the sea ice of the Arctic Circle.

A photo of Sea Otter (Enhydra lutris)
Endangered

Sea Otter

Enhydra lutris

Mammal

The sea otter is the heaviest member of the weasel family and one of the few mammals known to use tools, cracking open shellfish with rocks while floating on its back.

A photo of Walrus (Odobenus rosmarus)
Vulnerable

Walrus

Odobenus rosmarus

Mammal

The walrus is a massive Arctic marine mammal easily identified by its long ivory tusks, thick blubber layer, and distinctive whiskered snout.

A photo of Zebra Shark (Stegostoma tigrinum)
Endangered

Zebra Shark

Stegostoma tigrinum

Fish

The zebra shark is a docile, bottom-dwelling shark of the Indo-Pacific, named for the dark stripes seen in juveniles that fade into a spotted pattern as adults.

Ocean Animals FAQs

How many ocean animals are listed here?

This page currently features 11 species, and more are added regularly as the dataset grows.

What is the most popular animal in this list?

Polar Bear is currently the most popular animal in Ocean Animals.

Are any of these animals endangered?

Yes — 6 of the 11 species listed are classified as vulnerable, endangered, or critically endangered.

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