The Ganges — sacred river of India — flows 2,525km from the Himalayas to the Bay of Bengal, supporting over 400 million people and remarkable freshwater biodiversity. But extreme pollution, water diversion, sand mining, and river engineering have devastated its wildlife.
The Ganges river dolphin (susu) — India's national aquatic animal — is endangered with approximately 4,000 animals remaining. These functionally blind dolphins navigate entirely by echolocation in turbid water. Welfare threats:
Captive breeding programs at crocodile banks and zoos maintain insurance populations. Release programs have returned hundreds of young gharials to the wild — but survival post-release is low in degraded habitat. Post-release tracking documents predation, fishing gear mortality, and habitat stress in released animals.
Illegal and legal sand mining on Ganges and Chambal riverbeds destroys nesting habitat for turtles and gharials, destabilizes banks, and alters river morphology in ways that eliminate shallow sandbars critical for basking and nesting. Mining machinery directly damages nests and kills nesting females. The scale of sand extraction — to supply India's massive construction boom — is extraordinary, exceeding natural sand replenishment rates by 10-50x in some reaches.
India's $3 billion Namami Gange cleanup program (launched 2014) aims to reduce pollution through sewage treatment plant construction, industrial effluent control, and river rejuvenation. Progress has been uneven — treatment infrastructure lags demand and enforcement is incomplete. Where treatment has improved, dolphin habitat quality has measurably improved in some reaches.
Golden mahseer — once called "the tiger of the river" for their fight and size — have been extirpated from most of their former Ganges range. Conservation breeding at the Bhimtal Aquatic Research Centre and carefully monitored catch-and-release sport fishery programs in Uttarakhand are attempting recovery. Each successfully released mahseer represents a welfare success — life restored to a depleted system.