Platymaia alcocki
Amazing fact
The Hiraashi spider crab has broad, hair-edged segments near the tips of some walking legs.
新潟県水産海洋研究所
No sign-up needed. You can save notes on this device.
An illustration based on the real animal.
A little discovery to share.
The Hiraashi spider crab has broad, hair-edged segments near the tips of some walking legs.
THE REAL WORLD
The real Platymaia alcocki
- Scientific name
- Platymaia alcocki
- Japanese name
- ヒラアシクモガニ
- Group
- Ocean animals
- Class
- Malacostraca
- Order
- Decapoda
- Family
- Oregoniidae
- Genus
- Platymaia
It lives on sandy, muddy bottoms in deep water at the mouth of Tokyo Bay and in Sagami Bay.
Basic data
- Size
- Carapace width: about 3 cm
- Range
- Mouth of Tokyo Bay and Sagami Bay
Where the Platymaia alcocki 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
- ヒラアシクモガニ
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 — ヒラアシクモガニChecked: 2026-11-04
- 新潟県水産海洋研究所 — 珍しい魚（令和元年11月25日） ヒラアシクモガニ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.
Report a mistakeRELATIVES
Others in Oregoniidae
MORE TO MEET
