• Xanthrax@lemmy.world
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    1 day ago

    Oh, it’s because they live in a low oxygen environment. They can breathe through their skin and gills.

      • RedAggroBest@lemmy.world
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        2 hours ago

        No, they’re definitely obligated. Their gills are tiny and not enough for gas exchange. They need to breathe air via buccal pumping. What they mean by breathing through their skin is they release CO2 from their skin like amphibians do.