Advanced Panama
Coiba
A former penal island turned national park, with seamounts where cold water rises and brings in everything big
For nearly a century it was a penal colony, and that forced isolation protected its reefs better than any law could. Today it's a national park, and on its seamounts the cold water rising from the depths brings in schooling fish, sharks, and now and then something much bigger.
In this profile, you'll find out how diving works in the Panamanian Pacific, why the visibility here isn't like the Caribbean's and why that's actually good news, what wildlife you'll see, when to go, and what level the current demands.
It's part of the Eastern Tropical Pacific marine corridor, the chain of islands that sharks, turtles, and cetaceans travel between, across archipelagos separated by hundreds of kilometers.
Geography and access
Coiba is the largest island in Central American Pacific waters, off the coast of Panama, and the core of a national park that includes dozens of smaller islands.
Its history as a penal colony, closed at the start of this century, kept the island nearly unpopulated and its forests and reefs unexploited.
The eastern tropical Pacific isn't a classic coral reef sea: volcanic rock, coral patches, and high productivity driven by cold-water upwelling dominate instead.
That nutrient-rich water reduces visibility and drops the temperature sharply at thermoclines, and in exchange sustains a biomass that wouldn't exist in clear water.
The shoals and seamounts around the park are the highlights: elevations that intercept current and concentrate wildlife.
Access combines a domestic flight and road transfer to a mainland port, with one to three hours of navigation or liveaboard departures.
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