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Shrimp and mangroves. Mangroves and shrimp. The two are intertwined, ecologically and economically. They are like a pair of orbiting stars, though one shines at the expense of the other. The bitter irony is that without mangroves, there would be no shrimp. Mangroves are the natural nurseries of the shrimp species that are farmed commercially, just as they are for so many other marine creatures. In the wild, shrimp begin their lives in offshore waters, where the adults spawn. Then, carried inshore by currents, and perhaps aided by their own swimming, the larvae take up residence in sheltered inshore habitats where mangroves flourish. There, living and feeding in the shelter of the tangled limbs of the mangrove forest, they grow and molt until they are ready to migrate back out to sea.

Technology has short-circuited this ecological connection. Industrial shrimp hatcheries have taken the place of mangrove nurseries. From the viewpoint of commercial shrimp farming, mangroves are superfluous. And that is exactly what they have become on the ground. In most developing countries, it is not possible to visit mangroves without seeing the hobnailed bootprint of a rapacious industry. How did aquaculture come to be such a destructive force, and shrimp the mangroves’ nemesis?