This is no Earth mollusk. Its stacked shells are translucent. The "pearl" at one end functions as the lense of an eye. It walks on tube feet like a starfish. Its internal anatomy is still a mystery. All attempts to capture one have failed since they just slip under the sand when approached. Merchandise with this design is available in my store.
My name is Dan. I am an author, artist, explorer, and contemplator of subjects large and small.