The Crab Suit is a Submersible Mobility Platform that is a water-adapted variant of the AMP Suit with better speed, agility, and range underwater. The main lightweight carbon fiber body is a sealed pilot cabin from which two powerful arms and four nimble legs can furl (Sub Mode) or unfurl (Crab Mode). It conducts underwater construction at Bridgehead, as well as assists hunting boats in the recovery of tulkun catches. Armed with a rotary speargun, it can also function as a security and defense unit.