• ThatWeirdGuy1001@lemmy.world
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    1 year ago

    What fucks me up is the fish that can’t draw water through their gills manually and can only survive by constantly being in motion

    • bfg9k@lemmy.world
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      1 year ago

      Imagine we couldn’t actively breathe but instead got all out air by running into the air to force it into your lungs

      Sounds terrifying, how do they sleep?

      • ThatWeirdGuy1001@lemmy.world
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        1 year ago

        Their brains evolved to put different parts of itself to sleep at a time.

        Iirc sharks put one half of their brain to sleep at a time. Though that might be dolphins I honestly don’t remember.

        Hell it might even be both my brain is a tangled ball of yarn lmao

    • LouisGarbuor
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      1 year ago

      I’m not an ichtyologist, but iirc most fish can breath without moving. Some sharks must move to breath, but plenty of them don’t have to, i.e. the wobbegongs