How the world’s voracious appetite for shrimp is destroying Ecuador’s mangroves

At low tide, Johana Carolina Cruz Potes steps into the mudflats around Isla Costa Rica, in Ecuador’s Jambelí Archipelago. Holding a bucket and a short metal hook, she probes the tangled roots of a mangrove patch, searching for concha negra, black-shelled cockles, buried beneath the sludge.

Cruz Potes has done this work since she was nine, when she first followed her father into the mud. But earning a living from shellfish gathering – often the only income for families here – has become harder as grounds shrink and catches decline.