Into the wetlands: a boat safari through Caño Negro, Costa Rica's premier wildlife refuge

South of the Nicaraguan border, where the Río Frío fans out into a labyrinth of lagoons, marshes and flooded forests, the Caño Negro National Wildlife Refuge protects one of Central America's most biodiverse wetland ecosystems. A full-day excursion from La Fortuna reveals this hidden world — and the staggering concentration of wildlife it shelters.

The journey begins with a scenic drive through the northern lowlands, trading volcanic peaks for flat expanses of tropical farmland. At the river's edge, a motorised boat sets off downstream under a canopy of overhanging branches. Within minutes, the wildlife reveals itself: roseate spoonbills wading in the shallows, anhingas drying outstretched wings, caimans motionless along muddy banks, and howler monkeys calling from the treetops. A naturalist guide identifies each species — over 300 bird species have been recorded here — and navigates the boat into narrow channels where three-toed sloths and basilisk lizards hide among the foliage.

The Río Frío boat safari covers approximately two hours, with frequent stops for photography and quiet observation. After disembarking, a traditional Costa Rican lunch is served at a riverside restaurant before the return drive to La Fortuna.

Caño Negro ranks among the top birdwatching destinations in the Americas, and outside the peak dry months, the flooded landscape transforms the refuge into an even richer mosaic of aquatic life. This excursion is ideal for nature lovers, photographers and anyone seeking Costa Rica's wilder, less-visited side.