This is a typical hiding place for a Squat Lobster-- in between the cirri (claw legs) and arms. In Crinoids, as in other Echinoderms such as Starfish, there are five radially symmetric sections, from which the arms branch off. If any one section is broken off, another will regenerate in its place. Identification of Squat Lobster: Allogalathea elegans back to crinoid creature thumbnail page