Coral Crabs in Shallows (more details)

please read all and maybe feedback for my feedback?
Coral Crabs don’t really fit in with their environment, not spawning near coral at all. what if coral Crabs could hide in the shallows? I don’t see any negative downsides, but if there are any it could easily be fixed!
imagine the life it adds to the shallows and even jumpscare potential! it was in the trailer :)
I’m happy with the idea, what you all think?