Pickfordiateuthis bayeri, or BayerâÂÂs grass squid, is a species of squid in the family Loliginidae. Discovered in 2001 in the Atlantic Ocean discovered by a submersible (Roper C.F.E. & Vecchione M). A small squid, the female specimens sized between 23 and 26 mm mantle length. Found in the western Atlantic Ocean, particularly in the Caribbean region. Specimens were collected from a swarm of squid at ~110 m depth.