Four-Lobed Swimmer Crab

Thalamita sima
Four-Lobed Swimmer Crab - Marinewise © 2026 MarineWise

Quick Facts

Scientific nameThalamita sima
SizeUp to 9 cm (3.5 in) Carapace
WeightUnder .20 kg (.44 lb)
FamilyCrustaceans / Portunidae

Distribution

Habitat & AU DistributionCoastal waters amongst rocky areas and reef, intertidal zone
Depth Range0 - 35 m (114 ft)
Four-Lobed Swimmer Crab Distribution