Our excursion met in the Walt Disney Theater at 7:45 so we had to get ourselves up early to make sure we had breakfast but when I looked out the window I perked up pretty quick.

Full disclosure this was taken in the middle of the day but you get the idea.
The nerd in me also noticed that parked not too far away was the yacht that Steve Jobs had designed for his family. It's the middle of the three.
We were doing the "St. John Champagne Catamaran Sail and Snorkel". We really wanted to go to St. John so this appealed to us. We first boarded an "open air safari taxi", translation "expedition everest without seat belts or doors". Also in St. Thomas they drive american cars, steering wheel on the left, but drive on the left also. It was um...exciting. Once to the Marina we were led out to our Catamaran.
There were 3 crew leading the tour and all were very nice. Megan, Ryan, and Captain Theresa. As we sailed along Megan shared some trivia about the islands. She pointed out one large flat rock where old ships used to test their cannons. If you snorkel there you can find cannon balls littered all over the ocean floor.
I think the ride was a quick 45 minutes or so. There is so much around the look at that it felt very fast.
Once we pulled up the sun was out and they claimed the water was about 80 degrees.
They pointed out two buoys not too far from the boat and said between them you can often find sea turtles. Right off the boat the water is probably 30-40 feet deep. We headed straight over and found some right away.
You aren't allowed to touch the turtles obviously but I swam down to them and was able to get pretty close. When they come up for air they would swim right near people also.
After spending a good amount of time observing my flippered friends we decided to swim up towards the beach. It's difficult to really express how clear and perfect the water is, or how soft and wonderful the sand is closer to the beach.
We had a great time. The beach really is amazing and I would not hesitate to ever go back...We wish we were there right now.
We had about an hour in the water, just long enough to get cold, and then they called us back. The sun was shining beautifully the whole way back and they had an open bar of champagne, beer, and rum punch. We learned a harsh lesson about drinking rum punch on a catamaran on our honeymoon so we stuck to beer and champagne.
Again the scenery was wonderful going back. Once back to the marina we boarded the "safari-taxi of terror" and headed back to the ship.
I took more video than pictures of this excursion so I threw this video together quick to give a better idea of what it was like.
http://www.youtube.com/watch?v=1XeGi7_ChVs
Be sure to watch in HD.