Random Sea Animal Generator

Generate a random marine animal with a photo and facts. The list covers whales, seals, sea otters, crabs, lobsters, sea urchins, corals and jellyfish.

The ocean covers about 70% of the planet and holds a huge variety of life, much of it still undiscovered.

All 22 sea animals in the generator

  • Jellyfish – Has survived for over 650 million years
  • Starfish – Can regenerate lost arms
  • Blue Whale – The largest animal known to have ever lived, up to about 30 m long
  • Humpback Whale – Males sing complex songs that can be repeated for hours
  • Orca – Orcas are actually the largest members of the dolphin family
  • Beluga Whale – Nicknamed the 'canary of the sea' for its chirps and whistles
  • Narwhal – Its tusk is actually a tooth that can grow about 3 m long
  • Sperm Whale – It has the biggest brain of any animal on Earth
  • Manatee – Manatees' closest living relatives are elephants
  • Walrus – Walruses use their tusks to haul themselves out onto the ice
  • Sea Otter – It has the densest fur of any animal, up to a million hairs per square inch
  • California Sea Lion – Unlike seals, sea lions have ear flaps and can walk on their flippers
  • Dugong – Sailors' mermaid legends may have been inspired by dugongs
  • Japanese Spider Crab – It has the longest leg span of any arthropod, up to about 3.7 m
  • American Lobster – Its blood is pale blue because it uses copper instead of iron
  • Mantis Shrimp – Its punch is so fast it makes bubbles that collapse with a flash of light
  • Sea Urchin – Its mouth, called Aristotle's lantern, has five self-sharpening teeth
  • Sea Anemone – A relative of jellyfish and corals, it catches prey with stinging tentacles
  • Brain Coral – Each 'brain' is a colony of thousands of tiny animals called polyps
  • Horseshoe Crab – Not a true crab; its blue blood is used to test medicines for bacteria
  • Sea Cucumber – Some shoot out their insides to scare predators, then regrow them
  • Krill – Their combined mass may be among the largest of any animal species on Earth

Frequently asked questions

What is a marine animal?
Any animal that lives in the sea for all or most of its life, from whales to corals.
Are fish included?
Fish have their own random fish generator. This page focuses on other sea animals such as marine mammals and invertebrates.
Is the sea animal generator free?
Yes, it is free with no sign-up.