Standing waist-deep in the turbid waters of Ashtamudi Lake, the artisanal fishers may appear to be solitary figures, patiently attuned only to the tide’s rhythm. But in reality they are waiting for some cue from their allies who are beneath the water. In a classic instance of inter-species collaboration, Indo-Pacific humpback dolphins (Sousa plumbea) drive dense schools of fish to the shallow, shoreline waters and signal the fishers with a dramatic tail-slap or roll.
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