Bunions (Or the Lack Thereof)

Water sprites cannot have bunions. Simple as that.
First of all, because some of them do not even have feet. They have fins, like mermaids or mermen. Don't call them that, though! It's terribly rude in their culture.
Second of all, their feet (if they have them) are much too clean to get any sort of infection, fungus or growth.

Now that's settled, let's begin.