Florent's Guide To The

Tropical Reefs

Heart Urchin Pea Crab
Dissodactylus primitivus
Heart Urchin Pea Crab
Category: Pea Crabs
Scientific Name: Dissodactylus primitivus
Size: Up to 0.5 in. (1.2 cm)  
Depth: 3-130 ft. (1-40 m)
Distribution: Caribbean, Florida, Bahamas
Note: Lives underside of sea urchin Meoma ventricosa
Arthropoda (Phylum)
└Crustacea (Subphylum)
 └Malacostraca (Class)
  └Eumalacostraca (Subclass)
   └Decapoda (Order)
    └Pleocyemata (Suborder)
     └Brachyura (Infraorder)
      └Pinnotheridae (Family)
       └Dissodactylus (Genus)

Crustaceans
Pea Crabs

Heart Urchin Pea Crab



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© 2025 Florent Charpin