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Could this humble sea sponge clean up the world’s ports?

The chicken liver sponge has sailed through a test of its ability to filter pollutants in a harbour in Spain’s Costa Brava In the polluted waters of Marina Palamós on Spain’s Costa Brava, Manuel Maldonado, a sponge biologist, noticed something unusual last month: red starfish had started settling in the area. Nearly two years earlier, the Spanish National Research Council scientist and his colleagues had begun…