SWIM IN A CAVE: Guests get to swim in the crystal waters of sacred underground caves, where they will encounter marvelous natural underwater formations of stalactites and stalagmites. (rosewoodhotels.com)
Reefs, corals, and underwater formations dazzle, and nimble sea creatures zip around you. (cancuntours.net)
Characterized by limestone caves and enormous stalactite formations, the Blue Hole's unique underwater formations are extraordinary. (anywhere.com)