Radiant sea urchin
Amazing fact
Schooling bannerfish have been recorded swimming close around blue-spotted sea urchins.
沖縄美ら海水族館
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An illustration based on the real animal.
A little discovery to share.
Schooling bannerfish have been recorded swimming close around blue-spotted sea urchins.
THE REAL WORLD
The real Radiant sea urchin
- Scientific name
- Astropyga radiata
- Japanese name
- アカオニガゼ
- Group
- Ocean animals
- Class
- Echinoidea
- Order
- Diadematoida
- Family
- Diadematidae
- Genus
- Astropyga
A large relative of the long-spined sea urchins, found from south of the Boso Peninsula across the Indo-West Pacific.
Basic data
- Size
- Shell size: 15 cm or more
- Range
- South of the Boso Peninsula and the Indo-West Pacific
Where the Radiant sea urchin has been recorded
Records: GBIF.org (CC0 and CC BY 4.0 records, retrieved 2026-11-07). Map: Natural EarthSee the records on GBIF
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
- 日本語
- アカオニガゼ
- 简体中文
- 星肛海胆
- 繁體中文
- 星肛海膽
- Español
- Falso erizo de fuego
- Français
- Oursin rouge
- Deutsch
- Roter Diademseeigel
- Italiano
- Riccio rosso
Names come from Wikidata and iNaturalist records. Where a language has no recorded name, we use the scientific name.
Sources and how we check
- 鳥羽水族館 — アカオニガゼChecked: 2026-11-04
- 沖縄美ら海水族館 — アカオニガゼChecked: 2026-11-07
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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