Florent's Guide To The

Tropical Pacific Reefs

Two Horn Box Crab
Calappa bicornis
Two Horn Box Crab
Category: Box Crabs
Scientific Name: Calappa bicornis
Size: Up to 2.5 in. (6.5 cm)  
Depth: 30-200 ft. (10-60 m)
Distribution: Indo-Pacific
Arthropoda (Phylum)
└Crustacea (Subphylum)
 └Multicrustacea (Superclass)
  └Malacostraca (Class)
   └Eumalacostraca (Subclass)
    └Eucarida (Superorder)
     └Decapoda (Order)
      └Pleocyemata (Suborder)
       └Brachyura (Infraorder)
        └Calappoidea (Superfamily)
         └Calappidae (Family)
          └Calappa (Genus)
           └C. bicornis (Species)

Crustaceans
Box Crabs

Two Horn Box Crab

Giant Box Crab

Rough Box Crab



All Photographs
© 2025 Florent Charpin