Plancia ëd Diodora aspera (Rathke 1833)

Descrission:

This limpet has detected the adjacent giant seastar chemically and is raising its protective mantle. Thus the predatory seastar's tube feet will be unable to adhere to the limpet. The limpet's excurrent keyhole is present on the dorsum. Depth 15 m. Subclass prosobranchia.