Snorkeling & Scuba Diving -- Cabo Pulmo National Marine Park is Baja's most vibrant marine sanctuary, and the northernmost living coral reef in the Americas. All the dive companies in Los Cabos make dive trips here, but why not save yourself the drive and stay? You'll find all manner of reef fish, sharks, sea turtles, and mantas, as well as a sea lion colony and the wreck of El Vencedor. Arrange two-tank dive trips ($149) with Cabo Pulmo Dive Center (tel. 624/141-0726; www.cabopulmo.com). There's great snorkeling offshore from the beach, all the way south from the dive center to where the coast curves into a protected bay, or go on a snorkel tour for $79.
Surfing -- The summer surf breaks all the way from San José to Punta Frailes. Shipwrecks (15km/9miles up the gravel road) and Nine Palms (near the grove of palms at Santa Elena) beaches are the most consistent; for directions and tips, check www.costa-azul.com.mx/areas_maps.
Windsurfing & Kiteboarding -- The straight, stiff winds blow coastward across the sandy bay of Los Barriles from November through March, making this one of Baja's kiteboarding and windsurfing hot spots. Rent gear and take lessons from Exotikite (tel. 624/165-2612; www.exotikite.com) or stop by the stands on the beach.
Pacific Side Activities
Off-Road Driving -- Get the adrenaline pumping without getting wet on a dune buggy tour: Drive automatic-transmission open-frame buggies through desert canyons and along the wind-swept Pacific shore with Baja Buggys (tel. 888/497-4283 in the U.S., or 624/105-9318; www.bajabuggys.com), located at Puente Migriño, Hwy. 19 Km 100. Two-hour outings leave Monday to Saturday at noon and 3pm, and cost $140 single, $180 double.
Surfing -- Cerritos is the Pacific Side's most famous, and crowded, surfing beach, great for beginners and beloved of experts too. But winter breaks are all up and down the coast, including Migriño (Km 100), Gaspareño (Km 73), San Pedrito (Km 59), and Punta Lobos (Km 54). Most beach access roads are unpaved and unmarked but easy to find, as there aren't that many of them; beaches are generally 2 to 3km (1-2 miles) from the highway. See www.costa-azul.com.mx/areas_maps for details. You can rent boards and take lessons at the Costa Azul surf shop or through Rancho Pescadero. At the former, be aware of hefty replacement fees should you ding a board; examine your gear well.
Go Yoga -- The Pacific Side offers a great deal of tranquillity and plenty of opportunities for Zen-like moments. You can get your "om" on at a retreat like Prana del Mar (tel. 415/310-2909 in the U.S.; www.pranadelmar.com) at Km 105 on Hwy. 19 in Migriños. For about $2,000 you can spend 7 days enjoying twice-daily yoga classes, organic meals, and ocean-side meditation; Prana del Mar is totally off-the-grid and one of the most sustainable hotels in Baja. Or, if you're interested in turning your downward dog into a new career, you can attend a 16-day yoga teacher training at the Yandara Yoga Institute (tel. 877/490-9883; www.yandara.com) in Todos Santos. The $2,330 tuition includes certification, tuition, meals, and accommodations.