First record of Ophiura ljungmani (Echinodermata: Ophiuroidea) from an anchialine cave in the Mexican Caribbean

One specimen of Ophiura ljungmani Lyman, 1878 was collected in an anchialine cave in Cozumel Island, Quintana Roo. The finding represents the first record of this ophiuroid in an anchialine cave, and also the shallower record for the species in any habitat.