Like humans, many bacteria like to spend time at the beach. The so-called flesh-eating bacteria, Vibrio vulnificus, don't just like the beach; they need it, and rely on seasalt for survival. And as with human beachgoers, the warmer the water, the more of them there are.
source https://www.lifetechnology.com/blogs/life-technology-news-blog/you-probably-dont-need-to-worry-about-flesh-eating-bacteria