Snorkeling and Diving

The islands that dot the sea in front of Manuel Antonio are surrounded by volcanic rock reefs with small coral formations. They attract schools of snapper, jacks, barracudas, rays, sea turtles, moray eels, and other marine life.

Oceans Unlimited. This PADI 5-star career development center offers all-day diving excursions to Caño Island, local dives, and PADI-certification courses; rental equipment is included. A half-day, two-tank dive for certified divers at Manuel Antonio is $109. Note that tours leave from Quepos. Marina Pez Vela, Quepos, Puntarenas. 2519–9544; www.scubadivingcostarica.com. From $109; Caño Island day trip $175.