Go for a snorkel with Mexico's gentle giants - whale sharks! Cruising the Gulf of Mexico with an expert guide, you'll snorkel with the biggest fish and maybe spot dolphins, manta rays, and turtles on this small-group snorkeling adventure off the Yucatan coast. *NOTE: WE CAN OPERATE A PRIVATE WHALE SHARK TOUR ALL DAYS (EXCEPT 30 OF EACH MONTH).