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Ocean animals

Oncopagurus monstrosus

Amazing fact

Oncopagurus monstrosus uses a shell-like home made by a sea anemone.

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Oncopagurus monstrosus in its habitat (illustration)

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An illustration based on the real animal.

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Oncopagurus monstrosus uses a shell-like home made by a sea anemone.

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THE REAL WORLD

The real Oncopagurus monstrosus

Scientific name
Oncopagurus monstrosus
Japanese name
アカモントゲオキヤドカリ
Group
Ocean animals
Class
Malacostraca
Order
Decapoda
Family
Parapaguridae
Genus
Oncopagurus
Facts about the real animal.
01

It lives in seas from south of Suruga Bay to the Indian Ocean and the western Pacific.

02

Both its claws and its walking legs are white with red markings.

How the Oncopagurus monstrosus lives

The anemone Paracalliactis tsukisome may feed on this hermit crab’s droppings and other material.

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Basic data

Range
Indo-West Pacific and south of Suruga Bay
鳥羽水族館

Where the Oncopagurus monstrosus has been recorded

World map with dots where the Oncopagurus monstrosus 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

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
弹弓肿寄居蟹
繁體中文
彈弓腫寄居蟹

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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