This beach is beautiful and it's my personal favorite in Florida (except when crazy spring breakers are there). We usually go here for at least one weekend a year. I've never seen a shark there and hope I never do! Lol
Sharks don't normally attack humans anyways unless there's blood in the water. Or you spook it. But scary as fuck, nonetheless, so you got the feeling down!
I was in PCB down the strip. I was in the water with a friend and my dad and a bullshark swam about 5 feet away from us. Luckily he decided to swim down the sandbar and leave us alone but it scared the shit out of me.