Lithodidae Dromiidae Atelecyclidae Cancridae Pirimelidae Cheiragonidae Dorippidae Eriphiidae Epialtidae Inachidae Oregoniidae Pilumnidae Geryonidae Portunidae Potamidae Panopeidae Xanthidae Grapsidae Images Name list Publications Sites Whole checklist По-русски (in Russian) Porcellanidae Varunidae Camptandriidae Macrophthalmidae Pinnotheridae Hapalogastridae Plagusiidae Far East / North Pacific Black Sea Baltic Sea Freshwater crabs Arctic Ocean Designed and composed by Alex Alyakrinsky, 2011 Links Assembling the Tree of Life: Decapoda ( This project is aimed at  clarifying the evolutionary history of the decapods (both fossil and extant), including the  shrimp, crabs, crayfish, and lobsters. It was created by Keith Crandall, Darryl Felder, Joel  Martin, Carrie Schweitzer and Rodney Feldmann. Very useful site. Great number of pdfs on the  subject!  Marine Species Identification Portal ( This site offers information  on thousands of different species in the world's oceans and seas. The part of this project is  Crabs of Japan.  De Krabben van Nederland ( Crabs of Holland. (In Dutch).