Noun
flattened disklike sea urchins that live on sandy bottoms
Source: WordNetI love being in Malibu. It's so cool there, and the water is just, it's nice and, and I love the beach. And I found a sand dollar there. Jackie Evancho
Stretching out its proboscis across the substrate it shovels material into its mouth before separating the edible particles. citation Other spoon worms conceal themselves in rock crevices, empty gastropod shells, sand dollar tests and similar places. Source: Internet
This has long been known to occur among starfish and brittle stars but has been more recently observed in a sea cucumber, a sand dollar and a sea urchin. Source: Internet