Do It Yourself

Tickle a Monster

Scuba Divers in the Pacific near the Socorro Islands, 250 miles southwest of the tip of Baja California, get used to seeing hammerhead and tiger sharks, 400-pound tuna and the occasional humpback whale. Cabo Resort Reservations of Pacific Palisades, Calif., ferries divers from the Baja resort town of Cabo San Lucas to the Socorros on nine-day, $2,350 tours during which the real headliners are 2,000-pound manta rays with 20-foot wingspans. These gentle, stingless beasts can be as playful as dolphins—they often swim in spirals and do somersaults—and as easy to please as puppies. They like to have their stomachs rubbed.