I always love an excuse to pull this picture back out...
I was snorkling off the adult beach in about 6' deep water (so no, I was NOT extreamly close to the shore, but was inside those orange markers you see way out there. Well I spotted this fella and managed to get a picture before he swam out of view. I was never scared... but when I considered that I was about 100 yards from shore, I did start paying more attention to my surroundings the rest of the day.
It's not obvious to spot, but look just below the 9 o'clock position and you'll spot the outline of what is believed to be about a 6' reef shark that was about 40' away.
You are so lucky, and I am so jealous! Of all my logged scuba dives, I have only had the privilege of seeing sharks on three of those dives.
But, at least I can boast that I have seen a great white shark in the ocean - I was off Anacapa, one of California's channel islands, and saw it about 20 feet away as I exited a kelp forest.
Sharks are beautiful creatures - I wish they were protected from finning and emasculated men with low self esteem who try to make themselves feel manly by catching one from the total safety of a boat.