Strigamia maritima is a centipede, its worm-like body is divided into a head and a trunk. The trunk is subdivided into segments, all but two of which have a pair of walking legs. Segment number may vary between Strigamia maritima individuals. The first pair of modified legs are poison claws on the head. The last pair are strong and brightly coloured and used in display. It has two pairs of antennae coming off the head region.