this post was submitted on 05 May 2025
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me_irl

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submitted 5 days ago by [email protected] to c/[email protected]
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[–] [email protected] 19 points 5 days ago* (last edited 5 days ago)

Yes, they have an internal clock of sorts. IIRC current theories are that they can sense changes in blood chemistry as their blood loses access to oxygen.