I'm a WSI, BSA and Red Cross Lifeguard, Open Water SCUBA.
The guy can barely swim. Did you notice he was wearing flippers? Still kept going under and could barely make forward progress. Probably a natural sinker as well.
Just the sort of "thinks he can swim" who gets all macho and gets straight into trouble.
If you can’t swim, and get in water over your head, you wear a freaking lifejacket.
I know that makes it harder to balance yourself on a paddle board, but, it can be done.