Kim MacLean, a former colleague of Jacques Cousteau, pioneered White Shark Cage Diving in 1993, using Dyer Island, about 160 km from Cape Town, as a base. From mid-February to September, certified divers are submerged in galvanized steel cages to photograph or merely marvel at the beasts, which often swim by ten at a time. Non-divers can watch from the boat, since the visibility is keen and the sharks are surface feeders. Off-road racing in Baja California, Mexico. Trekking in Nepal.
Itineraries vary, depending on length, degree of difficulty, and desired vantage points.
Tours, an acclaimed operator, uses Nepali staff from the Kumbu region. Rather than overnighting in ramshackle hotels, trekkers stay with their guides' families en route. Retracing the outlaw trails of the U.S. West. If John Glenn's escapade brought out fantasies of being a Shuttle payload specialist yourself, Space Camp in Huntsville, Alabama, can let you live them out without having to leave terra firma. Following your training, you'll alternate roles in mission control and on the shuttle crew during two different mock missions.