Purple Crab

Gecarcoidea lalandii

"Gecarcoidea lalandii" is a large species of terrestrial crab. It is dark purple in colour, with long legs and short pincers. It is nocturnal, so spends most of the day hiding in burrows. Compared to the related "G. natalis", "G. lalandii" is relatively widespread, being found in the Indo-Pacific from the Andaman Islands and eastwards.
Purple Crab - Gecarcoidea lalandii Supposedly a Land Crab but seen underwater. Cebu,Crab,Gato Island,Gecarcoidea lalandii,Land Crab,Malapascua,Philippines,Purple Crab

Habitat

Adults mainly occur in forest, but can sometimes be found in more open habitats. When carrying eggs, females migrate to the coast, where they release the eggs in the tidal zone. Small adults sometimes fall prey to the crab "Geograpsus crinipes".

References:

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Taxonomy
KingdomAnimalia
DivisionArthropoda
ClassMalacostraca
OrderDecapoda
FamilyGecarcinidae
GenusGecarcoidea
SpeciesG. lalandii
Photographed in
Indonesia
Philippines