Tortuguero has no road. Costa Rica's third-most-visited national park can be reached only by boat or by light aircraft landing on a single strip cut between the canal and the sea, and that isolation is why Tortuguero 2 Day Tour From San Jose Tours are built around water transfers rather than rental cars. The park was declared in 1975 and protects roughly 31,000 hectares of lowland Caribbean rainforest, lagoon, swamp forest and some 35 kilometres of black-sand nesting beach. Rainfall reaches five metres a year in the wettest sectors. The canals are half natural, half engineered: a chain of channels widened for the logging trade, now the only streets the village possesses. Boats replace buses. Cerro Tortuguero, a weathered volcanic hill of 119 metres, is the sole relief in a landscape otherwise flat to the horizon. The park's significance is counted in turtles. The shoreline north of the river mouth is the largest green sea turtle rookery in the Western Hemisphere. Archie Carr began tagging nesting females here in the 1950s, and continuous monitoring has run since 1959 — among the longest unbroken records in marine biology. Leatherbacks, hawksbills and loggerheads come ashore in smaller numbers. SINAC administers the park from its ranger stations, and Tortuguero 2 Day Tour From San Jose Tickets sit alongside a conservation fee of 17 USD per person, payable online in advance, which funds beach patrols and station upkeep. Above the waterline the inventory is equally dense. More than 400 bird species have been recorded across the wider Caribbean lowlands, among them great green macaws, keel-billed toucans and agami herons. Three primates persist in the canal forest: mantled howler, white-faced capuchin and Central American spider monkey. West Indian manatees still graze the lagoon margins, rarely seen. Spectacled caiman line the banks; strawberry poison-dart frogs work the leaf litter a metre from the trail. The village itself holds roughly 1,200 residents, no cars, and a grid of raised wooden houses between the beach and the water. A tour a Tortuguero desde San José is, in practice, a crossing of three landscapes — the Guápiles highway through Braulio Carrillo, the banana plantations of Limón, and a final hour of canal — which is why the Tortuguero canal wildlife expedition format, spread across two days, has outlasted every attempt to compress it into one.