Crustaceans
An ostracod (Class Ostracoda)
Crustaceans found in New England
Crabs
- Family: Cancridae Cancer irroratus (Atlantic Rock Crab)
- Family: Ocypodidae Uca (A Fiddler Crab)
- Family: Ocypodidae Uca pugilator (Atlantic Sand Fiddler Crab)
- Family: Paguridae Pagurus (A Hermit Crab)
- Family: Portunidae Carcinus maenas (European Green Crab)
Crayfish
- Family: Cambaridae (Crayfishes)
Amphipods
Isopods
Barnacles
- Family: Balanidae Balanus (An Acorn Barnacle)
Copepods
Fairy Shrimp
- Family: Chirocephalidae Eubranchipus vernalis (Springtime Fairy Shrimp)
Clam Shrimp
- Family: Lynceidae Lynceus brachyurus (Holarctic Clam Shrimp)