Template:POTD/2014-01-27
Diagram of the deep sea limpet Bathyacmaea secunda, which inhabits the thermal vents of the Okinawa Trough and others around Japan. The actual animal is largely colorless, 6 millimetres (0.24 in) long, and completely blind. Organs with names in parentheses are located behind other organs.Diagram: K.D. Schroeder