WHATSTHATFISH
Crustaceans

Little Nipper Crab

Geograpsus grayi

Also known as: Beachrunner Crab, Blackback Land Crab, Black-backed Land Crab, Black Land Crab, Brachyura Crab, Little Nipper, Purple-backed Shore Crab, Terrestrial Crab, Tropical Land Crab, True Crab

Adult
@fishx6 · Gangehi, Maldives · March 20081 / 1
01

Overview

Found on the land under coconut husks and leaf litter, over sandy areas in and around coconut trees, mangroves and shorelines.
Depth - Land

These crabs have evolved over millions of years to live on the land, however when they are ready to spawn they ventures to the edge of the shore to release their eggs.
The juveniles then go through several moults underwater before the last critical moult to become a terrestrial crab, leaving the water back to land.

Brachyura crabs are considered true crabs, they have a short abdomen, 4 walking legs and a pair of clawed arms at the front.
Many thousands of species live worldwide in sea water, fresh water and on land.

02

How to identify

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03

Habitat & where to find it

  • Range · Indo-West Pacific
  • Country only · 1
LIVES IN

Found on the land under coconut husks and leaf litter, over sandy areas in and around coconut trees, mangroves and shorelines.

04

Adult photos 1

05

Discussion

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    ALL STAGES
    FOR THE MARINE-BIOLOGY CURIOUS

    Deep dive

    Taxonomy

    1. kingdomAnimalia
    2. phylumArthropoda
    3. classMalacostraca
    4. orderDecapoda
    5. familyGrapsidae
    6. genusGeograpsus
    7. speciesGeograpsus grayi (H. Milne Edwards, 1853)

    SourcesWoRMSSeaLifeBase

    06

    More in the family

    Decapoda