Marine life includes an incredible and vibrant array of wild animals that live in the ocean. From tiny phytoplankton to massive blue whales, marine life is a vital source of food, energy and life for the entire planet.
  • Corals & Jellies
  • Crustaceans
  • Mollusks
  • Starfish & Related Organisms
  • Other Marine Life


The green glossary explains crab invasions in this article. Learn all about crab invasions.

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Sea Cucumber

The sea cucumber is a marine animal shaped like a cucumber or sausage, related to the starfish and the sea urchin.

Marine Census

What creatures live in Earth's oceans? Which are likely to survive into the future? What sorts of sea animals have inhabited the oceans in the past? Finding answers to these questions is the goal of the Census of Marine Life.

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