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This coupled with the music filled me with a deep horror that only ocean-born creatures have ever seemed to instill in me
A sand dollar is actually just a very very flat sort of sea urchin with very short spines, allowing it to easily slide through sand 🙂
i have never seen a sand dollar that’s still moving
does that mean that the dry pale ‘sand dollars’ that always come to mind are like. just bones???
Yep that’s the skeletal structure known as a “test!” These are the tests of normal sea urchins:
Both are pretty popular “seashells” people use in a lot of crafts.
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