Florent's Guide To The

Tropical Reefs

Sargassum Swimming Crab
Portunus sayi
Sargassum Swimming Crab
Category: Swimming Crabs
Scientific Name: Portunus sayi
Size: 2 to 3 in. (5 to 7.5 cm)  
Depth: 3-60 ft. (1-18 m)
Distribution: Caribbean, Bahamas, South Florida, Gulf of America
Arthropoda (Phylum) Arthropods
└Crustacea (Subphylum) Crustaceans
 └Multicrustacea (Superclass) Typical Crustaceans
  └Malacostraca (Class) Malacostracans
   └Eumalacostraca (Subclass) Decapods, Isopods, and Allies
    └Eucarida (Superorder)
     └Decapoda (Order) Decapods
      └Pleocyemata (Suborder)
       └Brachyura (Infraorder) True Crabs
        └Portunoidea (Superfamily)
         └Portunidae (Family) Swimming Crabs
          └Portuninae (Subfamily)
           └Portunus (Genus)
            └P. sayi (Species)
WoRMS ID: 1061759🔗
iNaturalist ID: 295386🔗

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© 2026 Florent Charpin