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Ocean animals

Japanese seahorse

Amazing fact

The Japanese seahorse is the smallest member of its genus.

鳥羽水族館
Japanese seahorse in its habitat (illustration)

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An illustration based on the real animal.

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The Japanese seahorse is the smallest member of its genus.

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THE REAL WORLD

The real Japanese seahorse

Scientific name
Hippocampus mohnikei
Japanese name
サンゴタツ
Group
Ocean animals
Order
Syngnathiformes
Family
Syngnathidae
Genus
Hippocampus
Facts about the real animal.
01

A seahorse that lives in Japanese seas south of Hakodate and off China and Vietnam.

03

It lives near the coast, among seaweed and on sandy or muddy sea floors.

Basic data

Range
South of Hakodate, Pacific coast of southern Japan, China, and Vietnam
鳥羽水族館

Where the Japanese seahorse has been recorded

World map with dots where the Japanese seahorse 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 livesJapanAsiaCoasts

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
日本海马
繁體中文
日本海馬
한국어
산호해마
Português (Brasil)
Cavalo-marinho-japonês

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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