Utria sits on Colombia's Pacific coast in the Choco Department, covering parts of the municipalities of Bahia Solano, Nuqui, Bojaya, and Alto Baudo. The park rises from sea level into the Baudo mountains, and three rivers -- the Condoto, Condotico, and Valle -- originate within its boundaries. Rain falls here on more than 300 days each year, dumping up to 10,000 millimeters annually, making it one of the wettest corners of an already soaking region. Average temperatures hover around 28 degrees Celsius at sea level. The result is a landscape of almost absurd biological richness: dense canopy forests dripping with moisture, mangrove tangles where seven of Colombia's ten Pacific mangrove species thrive, and coral reefs that harbor 11 of the 16 coral species recorded in the entire eastern Pacific.

The marine life here reads like a catalog of the Pacific's greatest hits. Over 180 species of fish patrol the reefs, from tiny gobies to the enormous whale shark. Bottlenose dolphins and oceanic Stenella dolphins are year-round residents, while sperm whales, killer whales, and Risso's dolphins make occasional appearances. But the headliners are the humpbacks. From June to November they fill the waters off the park, and from August through October, they crowd into Utria Cove itself to calve. On the beaches, olive ridley sea turtles are the most common nesters at Cuevita beach, joined sporadically by leatherbacks, hawksbills, and green sea turtles. Eighty-one species of mollusks have been recorded, including the Eastern Pacific giant conch, a species whose shells once served as trumpets along this coast.

The forest is no less spectacular than the ocean. Jaguars and pumas prowl the understory. Mantled howler monkeys announce dawn with their guttural roars, while black-headed spider monkeys swing through the upper canopy -- a species found nowhere outside the Choco-Darien corridor and classified as critically endangered. Giant anteaters lumber along the forest floor, and brown-throated sloths hang motionless in the ceiba trees. About 380 bird species occupy every stratum of the forest, from ground-dwelling antpittas to canopy-level toucans. The trees themselves carry cultural weight: cohiba is the symbol of the Choco Department, caracoli wood is carved into coastal boats, and chontaduro palm fruit feeds the indigenous Embera communities whose territory overlaps the park.

Created in 1987, Utria is unusual among national parks in that its conservation is deeply entangled with the lives of the people who live within and around it. The Embera indigenous people, whose cultural traditions remain remarkably well-preserved, share the landscape with Afro-Colombian fishing villages along the coast. Both communities are strongly oriented toward environmental protection, and the Corporacion Mano Cambiada, a local nonprofit, runs the park's ecotourism services. Visitors stay at the Jaibana center, which accommodates 31 people, and can hike trails of low to moderate difficulty, snorkel over the reefs, or simply wait on the grey beaches for a whale's breath to break the surface. Getting here requires commitment: a flight from Medellin to Bahia Solano or Nuqui, followed by either a three-hour jungle hike or a 30- to 50-minute boat ride.