I know he doesn’t look it, but this guy is a very lucky man.
He is going to live when it could have easily turned out a lot worse for him. As an added bonus, it appears nothing has been chopped off which is a novelty for this site.
Those gashes are the result of coming into contact with a spinning boat propeller. My guess is he couldn’t swim or dive fast enough to avoid the rapid approach of a motor boat. The distance between cuts tells me the boat must have passed over him quickly, otherwise I’m sure he would have ended up with much of his insides on the outside.