Science Posts - Tumblr Posts

terrestrial hermit crabs do not have lungs, only having modified gills, and can't breathe without water. their shells, along with offering them shelter and protection from predators, are very important for providing them with the water that their body needs to stay moist! taking a dip ever so often allows them to refill their shell with this moisture.

...also, did you know that many hermit crabs have evolved extraordinarily large penises in order to avoid leaving their shells to reproduce? depending on the species, this could give them a penis-to-body ratio of up to 60%! :)

me on tumblr: hey guys do you want to hear about hermit crabs

me in real life, no concept of social norms: hey guys do you want to hear about hermit crabs