Patelloida pygmaea is a species of sea snail, a true limpet, a marine gastropod mollusc in the family Lottiidae, one of the families of true limpets.
Oval shape (eggshell shape) limpet with varying colours on the shell. Usually spots on greyish-brown or pale-white background with regular edge.
Distributed around Yellow Sea of Mainland China, as well as Taiwan. Living in inter-tidal area, bay area with sheltering. Often appears around places where oysters are growing.