Atlantic
Guides
Bembidion contractum
Bembidion contractum is a species of ground beetle in the family Carabidae, described by Thomas Say in 1823. It is restricted to the Atlantic coastal region of North America, with a distribution spanning from Newfoundland to southern Florida. Inland occurrence records exist but remain unverified and require confirmation.
Chiridotea coeca
sand isopod, Surf Sandmole
Chiridotea coeca is a marine isopod crustacean commonly known as the sand isopod or Surf Sandmole. It inhabits sandy substrates in the western Atlantic Ocean, where it constructs burrows and exhibits distinctive swimming behavior when displaced. Adults reach approximately 15 mm in length and are specialized for fossorial life in intertidal and shallow subtidal zones.
Dissodactylus mellitae
Sand Dollar Pea Crab, sand-dollar pea crab
Dissodactylus mellitae is a small pea crab in the family Pinnotheridae that lives as an obligate symbiont on sand dollars. It inhabits the western Atlantic Ocean and has been documented specifically on the host Mellita quinquiesperforata. The species exhibits a close association with its echinoderm host, living on the aboral surface.
Dyspanopeus sayi
Say's mud crab, small mud crab
Dyspanopeus sayi is a small mud crab native to the western Atlantic coast of North America, ranging from eastern Canada to Florida. It has become a successful invasive species in European waters, first detected in Wales in 1960 and subsequently spreading to the Mediterranean Sea, North Sea, Black Sea, and most recently the Sea of Azov. The species inhabits muddy bottoms from the intertidal zone to depths of 46 meters and is an active predator of bivalve molluscs and barnacles. It reaches sexual maturity within one year and has a maximum lifespan of approximately two years.
Trophithauma rostrata
Trophithauma rostrata is a spider crab species in the family Inachidae, formerly classified under the genus Macropodia. Molecular genetic analysis (COI barcode) demonstrated that Macropodia parva should be synonymised with T. rostrata, while M. longipes was determined to be a synonym of M. tenuirostris. The species occurs in the Atlantic and Mediterranean regions. Like other inachid crabs, it exhibits epibiosis, carrying algae and other sessile organisms on its carapace.