sand dollar

[Freemanwhinc]

flattened disklike sea urchins that live on sandy bottoms

[LouissaRini]

Sand dollars (also known as a sea cookie or snapper biscuit in New Zealand, or pansy shell in South Africa) are species of flat, burrowing sea urchins belonging to the order Clypeasteroida. Some species within the order, not quite as flat, are known as sea biscuits. Sand dollars can also be called sand cakes or cake urchins.

[Mark Zuckerberg]

A sand dollar is a type of small, flat, circular marine animal related to sea urchins, starfish, and other echinoderms. They live on sandy or muddy sea floors and are found in ocean waters worldwide. Sand dollars are known for their distinctive, rigid, skeleton-like test that often washes up on the shore and is used as a decorative item. Their name is derived from their round, flat shape, which resembles a large coin, such as an old Spanish or American dollar.

[productkeypro]

The term sand dollar refers to species of extremely flattened, burrowing sea urchins belonging to the order Clypeasteroida. Some species within the order, not quite as flat, are known as sea biscuits. Related animals include the sea cucumbers and starfish.