Princess Cays, Bahamas

Some may think I’m ridiculous, but do any of the cruising SDopers who have been to Princess Cays Island know if the area allotted for swimming is cordoned off? It’s been a long time since I’ve been there, but it seemed to me you could only swim out so far. It seemed to be a cordoned off area. I know my 9 year old will freak if any major sealife swam by (jellyfish, sting rays, sharks, etc.) I need to be prepared…to prepare him! What’s the SDopers say about this?