Mandarina hirasei
Amazing fact
The Anakatamaimai land snail has a thick shell opening with a rim that turns outward.
多摩動物公園
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An illustration based on the real animal.
A little discovery to share.
The Anakatamaimai land snail has a thick shell opening with a rim that turns outward.
THE REAL WORLD
The real Mandarina hirasei
- Scientific name
- Mandarina hirasei
- Japanese name
- アナカタマイマイ
- Group
- Tiny animals
- Class
- Gastropoda
- Order
- Stylommatophora
- Family
- Camaenidae
- Genus
- Mandarina
A land snail found nowhere but the Ogasawara Islands. It belongs to the katamaimai group, snails known for their hard shells.
Its shell ranges from pale yellowish brown to dark brown, with no bands and little shine.
In forests where screw pines and other plants grow, it lives at many heights, from up in the trees down to the ground.
How the Mandarina hirasei lives
It feeds on plants.
多摩動物公園Basic data
- Size
- Shell size: 13 mm, 21 mm
- Diet
- Plants
- Range
- Southern Chichijima and Tatsumi Island, Ogasawara Islands
- Conservation status in Japan
- Critically Endangered or Endangered (CR+EN)Ministry of the Environment of Japan, Red List 2020
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
- アナカタマイマイ
Names come from Wikidata and iNaturalist records. Where a language has no recorded name, we use the scientific name.
Sources and how we check
- 上野動物園 — アナカタマイマイChecked: 2026-11-03
- 多摩動物公園 — アナカタマイマイChecked: 2026-11-03
- Ministry of the Environment of Japan, Red List 2020Checked: 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.
The conservation status in Japan is the category in the Red Lists of the Ministry of the Environment of Japan, which assess the risk of extinction for wild animals in Japan.
This page was translated from the original Japanese with the help of AI.
Report a mistakeWhen you meet the Mandarina hirasei, look for this
- Look for the nearly smooth surface of its shell.
Animals do different things from day to day, so you may not always see this.
多摩動物公園EXHIBIT INFORMATION
Places that keep or show the Mandarina hirasei
Zoos, aquariums and other places whose official websites say they keep or show this animal.
Displays can change with the animals’ health and the seasons. Check each facility’s official website before you go.
RELATIVES
Others in Camaenidae
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