this post was submitted on 21 Nov 2025
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The entire body of a sea urchin is what researchers are now calling an “all-body brain,” with neurons that function as a brain throughout its anatomy. (www.popularmechanics.com)
submitted 4 months ago by cm0002 to c/science@mander.xyz
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[–] Tollana1234567@lemmy.today 2 points 4 months ago

its called a nerve net for the most part. they dont have an actual brain per ce. thier nervous system is somewhat more complex than cnidarians.