Additionally, in the instances like salamanders that absorb oxygen through their skin is this the same function?
In: Biology
The thing is though, if you can keep your gills wet somehow, you can go in air just fine. Crayfish are a good example; the gills are located in the thorax – inside the body – so they have some control of humidity (plus the enclosed space helps), and also temperature to some extent by their location in sun/shade. This is how they colonize new areas: they go for a walk over land and look for new water bodies to live in. How far they can walk depends on species (some are better at it than others), but still, they have more distance before drying out than you may think.
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