What is this close-up picture? (WotsThat: Starfish arm surface)

Question

What object is shown in this zoomed-in close-up photo?

TuffLayer · Accepted Answer

Starfish arm surface. Starfish can taste with their arms through thousands of tiny sensory structures on their skin, allowing them to hunt by literally feeling out their food across the ocean floor. Even more wild, if a starfish loses an arm, it can regenerate a completely new one—complete with all those taste sensors—in just a few months.

Answer: Starfish arm surface

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