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Index of flora
Index of fauna
Kingdom Animale | Phylum Arthropoda | Subphylum Crustacea | Class Malacostrata
  Photo by Tan Bee HongLiomera
Family Xanthidae

Order Decapoda

These are algal feeders, and with such bright warning colours, are almost certainly poisonous.

They are slow moving crabs, usually hiding in rock crevices. (Shell width 3cm).
Shore environment
From A Guide to Seashore Life by Dr Leo W H Tan and Peter K L Ng
Published by the Singapore Science Centre and sponsored by BP

@Raffles Museum of Biodiversity Research and Singapore Science Centre