If you like to snorkel....try the free scuba resort course to see if you like diving. Sugar is a great instructor and will make you feel really comfortable. If you like it...you can easily upgrade to the full PADI OW course and use what you've already learned including the one dive going towards the four required for certification. Then you have your c-card for life and can dive anywhere in the world.
Couples Negril - September 2011, 2012, 2013 and have just booked 2014
Scuba Club Cozumel - Jan, Apr & Nov 2012 and Jan & Nov 2013
Cobalt Coast, Grand Cayman - May 2013
Retiring & moving to Cozumel, Mexico in early 2014