This smallish peanut worm grows to only a few centimetres in length, when its introvert is retracted. It is light brown in colour, but often has small darker brown papillae over some or all of its body, giving it a rough texture. Although it is relatively distinctive for a peanut worm, close examination is required to differentiate it from some sea cucumbers, as the papillae can resemble tube feet at first glance.
