Now that I love to play with, since I'm past my scuba days. I'm picturing going on vacation to the Caribbean with one of these and exploring the reef from a lounge chair on the beach. 
Brings to mind a trip we had to St. Lucia. They have a mystery thingy that no one has been able to get a look at to identify. I actually saw it, sort of, on a night dive there, off the hotel. This was a beautiful night and the full moon was so strong you could turn off your light and see the outline of the coral reef and the divers. I swung my light slightly to the right and caught whatever it was and it was so fast it was hard to believe it was so fast in the water. It was fast enough I had no sense of size or shape, you just caught the movement. My sense was it was something like an eel or octopus, but I think an eel would be too slow. Seemed thin. A lot of divers had seen this critter, but none have been able to figure out what it is.
I was thinking this PowerRay might catch it, but, alas, it only comes out at night. Well, many other good things to see during the day with one of these. One day they'll probably have hi resolution cameras...
Another place that comes to mind is the pier in Bonaire. Most beautiful encrustation and yellow anemone little critters living on it that you can imagine. That we did as a night dive, too, it was uniquely beautiful.
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