At this 27 3/4-square-mile national park, a 20,000-year-old coral reef has been legally protected since 1995 and is home to more than 2,000 different kinds of marine invertebrates—as well as more than 800 species of marine life, from mantas and giant sea turtles to dolphins and sea lions, and most famously, bull sharks, who divers can get face-to-face with year-round. The park comprises both land and sea, and is renowned among diving aficionados for its eight fingers of hard coral reef, plus its immense abundance of colorful tropical fish. The best months to visit are August, September, and October, when visibility is highest. The park isn't difficult to access. Head southwest from La Ribera and it's just 8 km (5 miles) from the end of the paved road; it's bordered by Playa Las Barracas in the north and Bahía Los Frailes to the south. It can also be reached by the dirt road running along the coast from San José del Cabo. It'll take you two hours or more this way, but the coast along this route is unmatched. (Though, if it's raining, stick to the paved route.) Dive centers line Cabo Pulmo's main street, leading to the beach, all of whom offer dive trips and snorkeling tours, full gear rentals, and more.