Remipedes are free swimming, troglobitic crustaceans characterized by a short head followed by an elongate trunk. The head is covered by a cephalic shield.
All species have a pair of slender, cylindrical pre-antennal frontal processes.
The trunk lacks tagmosis and is composed of numerous segments each bearing a pair of biramous, paddlelike swimming appendages. R emipedes lack eyes and body pigmentation. Cephalic shield present. Cephalon bearing pair of preantennular frontal processes. First antenna biramous.