While travelling north along Mumbai’s coast, you would see waves crash into rocks. When the sea swells, only a few boulders hump above the surface, and a dark, craggy foreshore is revealed in its retreat. Umesh Patil lives by this rhythm. Before daybreak, he and eight other men head out in two motorised boats, not far from the waterfront, to cast nets for the fish swept in with the tide. When the flow ebbs, they return to retrieve th...