Yeah, many beaches have rock formations and some other have causeways (reefs??).
I don't fear rocks as much as i fear currents, i've heard some very freaky stories about being catched by water currents, one of them is that there are some currents that go right on your feet, you can't see them, and sometimes those grabs you and take you out 2km away from where you are (obviously dead). :shivers:
If my feet are not on the ground, then i don't go further