A dive captain's season: counting coral and tourists in equal measure

Elena Vásquez arrives at the Puerto Azul marina before dawn most mornings, moving through the boats with the ease of someone who has done the same walk a thousand times. Her vessel, the Azul Profundo, sits third from the dock—a sturdy catamaran built for shallow-water diving and designed to rest lightly on the seabed. She runs a hand along the hull, checking the mooring line, and glances at the water. The colour tells her things. Today it is a clear jade-green, which means good visibility, which means good bookings if she had them.

Vásquez has been operating dive tours for two decades. She is also a certified reef monitor for the Costa Mar Reef Monitoring Network, a role that pays almost nothing but has become inseparable from her sense of what the work means. In recent months, the two roles have begun to pull in opposite directions. The reef is warming and losing colour; the tourists are staying away; and the federal dive-quota system, which limits how many divers can visit certain reef sectors each day, is now throttling her income without protecting the reef as effectively as it once did.

This October, she has booked only fourteen dives. In a typical October, she would have thirty-five. The shortfall reflects broader trends in Costa Mar's tourism sector, but Vásquez's situation also illustrates a tension that the region's conservation-tourism model has not yet resolved: how to sustain both the reef and the people whose livelihoods depend on it.