this post was submitted on 17 Jun 2025
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Today I Learned (TIL)

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TIL that "arms" and "tentacles" are two different structures in cephalopods. Arms have suction cups along the whole length, while tentacles have them just at the end. Squids have both arms and ten... (www.scienceandthesea.org)
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The original was posted on /r/todayilearned by /u/DoktorSigma on 2025-06-16 18:47:58+00:00.

Original Title: TIL that "arms" and "tentacles" are two different structures in cephalopods. Arms have suction cups along the whole length, while tentacles have them just at the end. Squids have both arms and tentacles, octopuses have just arms.

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