You've been downvoted, not sure why. But this is true. Lifeguards mainly tell people not to go in where it is dangerous. Like I said in my previous comment, if

You've been downvoted, not sure why. But this is true. Lifeguards mainly tell people not to go in where it is dangerous. Like I said in my previous comment, if you get into trouble it is very hard to see you let alone get out to you and save the day. You are responsible for your own safety. We used to red flag the beach (no one in the water apart from local surfers) then at the end of the day take the flags down and get ready to go home. Every time some idiot would go in for a swim... as if the flag was the thing that made the sea dangerous. If you go in the sea, be prepared.