Generally said to be people who can swim who get into trouble and drown. People who can't stay out of the water. So if you can't swim you are missing out on fun but are probably safer in practice.
"No. I'm going to say you can't always avoid getting into water."
True but accidentally ending up in water is rare. Deliberately putting yourself in water because you can swim is common. I'd still rather swim personally, but if I stayed out of the sea I would be safer.