We didn't encounter any sharks on our specific dive... but the thought was foremost on my mind. I kinda want a re-do, and hope to see a (very docile) whitetip or blue shark fin by. Then again, I was pretty satisfied watching little jellyfish. The lesson: being the bait is a very unsettling experience, especially at night. For perspective, imagine yourself in a foggy thicket, scanning 360 degrees, knowing that at any moment, a bear or mountain lion might pop through the haze, 20 feet away from you. Do this for 50 minutes, sucking air through a tube. Would you be game?