I know the topic of St. Augustine beaches has been closed long ago but I wanted to place a note on it. Most of the people said Niki's boss was mistaken and that he must have been at another place. I went to a beach yesterday in St. Augustine where the shells felt like shards on our skin. My children are scraped and cut up all over their backs and especially their legs. It is located off of Costal Highway/1A and Surfside Ave.
To get to this beach I headed North on San Marco Ave and when I saw the park with the Carosel I curved to the Right onto May St. which also has the long Bridge: It's called Vilano Causway/Francis and Mary Usina Bridge (Also called 1A) over to the beach areas. I made a left at the light (there is a Publix on your right there) onto 1A and it wasn't even a mile down on the right. Surfside Park.
I'm letting you know the directions so you can pass it by. If you are a surfer, you may get some good waves in. But if you have children you are probably better off going somewhere your children can build castles, swim and enjoy themselves without getting scraped, scratched, and cut by shards of broken shells.
Hope this helps someone. I wish I would have seen this earlier.