Hawaii Beach Safety!

I downloaded the AP news app for iPhone. It’s location aware and can pull up local news.  Very cool. What wasn’t really cool was the first local story about  4 people that died in 2 days walking along a beach in Kauai.  I believe there were strenuous beach warnings about high surf but it’s still shocking.  So I searched online and found this:

 

I read on the site that you shouldn’t go out further than you can swim.  Unfortunately I can’t really swim so does that mean I should basically stay where the water meets the sand?  Or is that still not safe enough? Beaches are weird.