Environmental and Forest Affairs Adviser Syeda Rizwana Hasan has said that the survival of dolphins reflects the health of rivers, and saving rivers ultimately ensures human survival.Dolphins are the symbol of a river’s health. Where dolphins live, rivers thrive — and when rivers survive, people survive,” she said while addressing a discussion marking International Freshwater Dolphin Day at the Forest Department headquarters in Agargaon on Sunday.Speaking as the chief guest, Rizwana Hasan stressed that keeping rivers clean is essential for both human and dolphin life. “Polluted rivers are deadly not only for dolphins but also for humans. Talking about dolphins is, in fact, talking about our own survival,” she said.She noted that although humans are polluting rivers themselves, they still claim to be a civilized nation — which she termed contradictory. “If dolphin numbers increase, it means our rivers are being protected. If they decline, we are putting rivers at ...