Gorgona Island (Colombia)

Gorgona is a lush former prison island turned national park, lying about 35 kilometres off Colombia's Pacific coast. Cloaked in rainforest above the waterline, it fringes into rocky reefs and coral that make it one of the country's most rewarding and accessible Pacific dive sites.

The diving blends reef life with big-animal potential. Rocky pinnacles and coral outcrops such as El Horno and La Montañita drop through 10–30 metres, holding whitetip reef sharks, schooling jacks, moray eels, turtles and stingrays. From July to November, migrating humpback whales congregate around the island to calve, and their song regularly fills the water while divers are down; whale sharks and mobula rays also pass through.

Conditions suit competent divers. Currents and surge can build on the exposed pinnacles, so while some reef dives fall within Open Water limits, an Advanced certification adds comfort at the deeper, current-swept sites. Visibility is variable, typically 8 to 20 metres in the nutrient-rich water that drives the island's abundance. Water sits around 25–28°C, and a 3–5mm wetsuit is appropriate.

Access is controlled to protect the park. Visitors travel by boat from Guapi or the mainland coast, stay in the park's simple lodging and dive with authorised operators under daily limits. The humpback season from July to November is the standout window, combining whale encounters with lively reefs, though the water is greener then. Gorgona rewards divers who value a wild, forested setting as much as the marine life. For over two decades the island held a notorious prison, and its overgrown cell blocks now sit eerily among the rainforest above the reef.