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Ocean animals

Atlantic horseshoe crab

Amazing fact

Atlantic horseshoe crabs can swim on their backs, using their gills like paddles.

University of Michigan Animal Diversity Web
Atlantic horseshoe crab in its habitat (illustration)

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An illustration based on the real animal.

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Atlantic horseshoe crabs can swim on their backs, using their gills like paddles.

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THE REAL WORLD

The real Atlantic horseshoe crab

Scientific name
Limulus polyphemus
Japanese name
アメリカカブトガニ
Group
Ocean animals
Family
Limulidae
Genus
Limulus
Facts about the real animal.
01

It lives along the coasts of the northwestern Atlantic Ocean, including the Gulf of Mexico.

02

It is called a "living fossil".

03

Close relatives have been found in rock layers from a very ancient time.

How the Atlantic horseshoe crab lives

At night, they eat animals such as small molluscs, as well as algae. They pick up food with appendages called chelicerae. They chew food at bristly bases and move it to the mouth. They usually move by walking along the bottom of shallow water.

University of Michigan Animal Diversity Web

Basic data

Range
Northwestern Atlantic coast, including the Gulf of Mexico
鳥羽水族館

Where the Atlantic horseshoe crab has been recorded

World map with dots where the Atlantic horseshoe crab has been recorded
Each dot marks a place with observations or specimens shared on GBIF. Some records are of animals that strayed or were brought by people, so the dots are not always where the animal lives.

Records: GBIF.org (CC0 and CC BY 4.0 records, retrieved 2026-11-07). Map: Natural EarthSee the records on GBIF

Where it livesNorth AmericaCoasts

Watch wild animals from a distance. Do not touch or feed them, and take care of the places where they live.

Names around the world

简体中文
美洲鲎
繁體中文
美洲鱟
Português (Brasil)
Límulo
Italiano
Limulo
Bahasa Indonesia
Belangkas Atlantik

Names come from Wikidata and iNaturalist records. Where a language has no recorded name, we use the scientific name.

Sources and how we check

We check each fact against its source. The illustrations simplify how the real animal looks.

The classification (class, order, family, genus) follows Wikidata records, checked against GBIF. Classifications can change as research goes on.

The basic data are the values given in each source. They vary with how the animal is measured, whether it is male or female, and whether it lives in the wild or in captivity.

This page was translated from the original Japanese with the help of AI.

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