Alongside a rocky tide pool, you discover an animal with a spherical body covered with spines that move when you touch it.This animal is most likely a(n)

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The description given matches that of a sea urchin, as they have a spherical body covered with spines that move when touched. Crinoids have feathery arms, sea stars have arms and cannot roll into a ball, acorn worms are not covered in spines, and sea cucumbers have a soft, elongated body with no spines.

Alongside a Rocky Tide Pool, You Discover an Animal with a Spherical