A starfish is a sea animal with a star-shaped body, usually with five arms. It lives in the ocean and moves slowly along the sea floor. People also call it a sea star.
In everyday English, “starfish” is usually used when talking about the animal itself, especially in nature, marine life, or children’s learning. You may hear it in school lessons, aquarium visits, beach talks, or wildlife articles.
Meaning & Usage
A starfish is a marine animal that belongs to the echinoderm group. It is known for its shape and for living in salt water. The word is common in casual speech, but “sea star” is also used more often in science.
Examples
We saw a starfish on the rocks near the shore.
The children learned about starfish at the aquarium.
A starfish can regrow an arm if it loses one.
Is “starfish” the same as “sea star”?
Yes. Both words are used for the same animal, though “sea star” is the more modern scientific term.
Where do starfish live?
Starfish live in oceans around the world, usually on the sea floor near rocks, coral, or sand.
Why do people say “starfish”?
People say “starfish” because the animal’s body looks like a star.
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