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Kurusadai Island’s history is more ecological and maritime. It was added to the Gulf of Mannar Marine National Park in 1986 and its name comes from the Kurusadai tree that lines the coast. Rameswaram, on the other hand, is steeped in Hindu pilgrimage lore its temples and the Ramanathaswamy Temple draw devotees for centuries. If you’re looking for insights into ancient religious traditions you’ll get more depth at Rameswaram, while Kurusadai offers a window into the region’s natural and conservation past.