Climb aboard a catamaran, and take a 3-hour snorkeling trip out to the coral reef at sunset. Sail across the sparkling waters, moor, and jump into the blue. Snorkel over to the reef and marvel at the abundance of ocean life just below you.   After about 1 hour of snorkeling, climb back into the boat for a leisurely sail back to the port. Sit back and drink some wine or beer while enjoying the magnificent panoramic view of the sun setting over the Gulf of Mexico.