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This was my first time scuba diving and we did the Discover Scuba while we are port on a cruise. The classroom part was very good and they covered everything they would be showing us and how the whole day would break down.
Once we got in the pool they covered the basics and learning how to clear the mask was a great new trick that I will be using even when snorkeling. It came in handy on this trip too. With facial hair i usually get a little bit of leakage that trickles in so it was nice to be able to clear the mask easy.
Once we got to the reef the experience was every bit as awesome as I thought it would be. I would def do this again. I felt very comfortable with our instructors and never felt nervous at all.
The one thing I would have liked to do different was be able to control my own buoyancy. There were times i felt like i was getting to close to the reef i would have liked to be able to just add a little air and float up a bit just for comfort level as I did not want to damage the reef.
You can check out Mayan Divers at http://www.mayandivers.com