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There is something mysterious inside the sea urchin. - Sea Urchin Dissection

Did you know that there is an unusual structure called Aristotle's lantern inside the sea urchin?

The sharp thorns are so intense that you can't see other things, but sea urchins hide a lot of things we haven't seen!

Did you know that when you put sea urchins in water, tentacles come out?

The identity of the tentacle-like thing is the tube foot seen in the previous starfish anatomy video.

Starfish and sea urchins are the same echinoderm and have quite a lot in common!!

So, if you watch the video comparing starfish and sea urchins, you will find it more interesting.

#sea urchin #anatomy #experiment

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