Walter:
It's unusual to see sharks. I saw my first one on my 49th dive.
i got a little bit luckier... saw my first shark on my 22nd dive, on Cayman's
North Wall
it was very far away, and probably a reef shark
our guide (his name was *******) saw the shark first and banged the crap out of
his tank. the whole group turns to look at the shark.
we're at about 110 feet, we've been down here about 10 minutes and
are starting to head up when we spot the shark. the shark is below us.
the DM dives towards the shark. the entire group follows him. down, down they go.
the shark is getting away. down down they go. later, some confessed
they went past 140 feet.
i am looking at the two other guys who stayed up with me, like "what the heck
are they doing?" (just three of us out of a group of ten or twelve stayed put)
well, eventually they made it back. several of them nearly ran out of air
on a mad dash for the boat. two had to get O2. i heard that one of the
guys had to ride the chamber that night.
the DM's like, hey guys, let's not tell anyone about this fun we just had
at 140 feet with a shark.
hehehehe...
moral of the story is: bad diving practices will get you killed faster than a shark