If you still don't understand what zentai is, then just check the picture above. what he is wearing is zentai, covers wearers from head to toe but allows them to see through. so it's ok for zentai wearers to live normally when they are in zentai.
To be honest, wearing zentai at beach are kinda useful to protect the sun burn and the bugs bites. and it's too outstanding to ignore even there are millions people. thus maybe zentai won't be a bad choice for people to wear at beach. it's cool and interesting though.
