Talk:Reefback/@comment-26303607-20150510011332/@comment-95.49.48.36-20150510110806

They might defend themselves like some of shellcrabs (or something, I don't remember how they are called). Some species of them carry poisonous anemone on their shells to protect them, in exchange for free transport. So in case of reefbacks, some residents of reefs on their backs might be able to defend their home-creature from predators (aforementioned poison, electricity or plain good teeth, clavs, spikes, whatever). I mean I wouldn't stay idle if something big tried to eat my home. Or as you said reefbacks will have some means of self defence.