sand dollars doin their thing
they’re basically sea roombas
I mean, I knew on some fundamental level that they’re related to sea urchins. I knew that the parts that I find on the beach are their skeletons.
WHY DID THIS VIDEO SURPRISE ME??
They aren’t just related to sea urchins, they are sea urchins.
They’re just a group of really flat sea urchins with really short spines
who eat sand
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