Sundarbans National Park: mangrove reserve, tiger habitat and coastal ecosystem

Landscape and ecological characteristics

Sundarbans is characterised by an intricate network of tidal waterways, mudflats and small islands shaped by sediment deposition. The region contains several principal rivers and countless creeks and channels that drain south toward the sea, creating a dynamic environment driven by tides and saline influence. Much of the terrain is dominated by dense mangrove forests adapted to brackish water and periodic inundation; these plants stabilise shorelines and form the structural backbone of the reserve.

Biodiversity and notable species

The park supports a wide array of wildlife adapted to its saline, tidal habitats. It is one of the better-known reserves for the Bengal tiger, including tigers that have adapted to swimming between islands. The fauna also includes many species of birds, fishes, amphibians and reptiles, and a rich invertebrate fauna essential to food webs. Prominent inhabitants include estuarine crocodylians such as the salt‑water crocodile and other reptile species, while numerous invertebrate groups, molluscs and crustaceans thrive in the intertidal zones.

Importance and human use

The Sundarbans delivers important ecosystem services: it buffers coastal areas from storm surges and cyclones, supports fisheries and aquaculture by serving as nursery habitat, and stores carbon in its soils and vegetation. Local communities depend on the forest for limited resources and livelihoods, including small-scale fishing and honey collection; at the same time regulated eco‑tourism provides income and raises awareness.

History, protection and conservation challenges

Over decades the Sundarbans has been recognised both nationally and internationally for its natural values and conservation importance. Protection measures include the national park status, tiger reserve management, and inclusion in biosphere and transboundary conservation conversations. Despite protection, the area faces multiple threats: rising sea levels and changing salinity linked to climate change, increased frequency of intense cyclones, habitat fragmentation, pollution and human‑wildlife conflict. Poaching and unsustainable resource extraction also pose risks to key species.

Management and outlook

Conservation efforts emphasise habitat protection, scientific monitoring, community participation and conflict mitigation, such as promoting alternative livelihoods and safety measures for people living on the forest fringe. Maintaining the ecological integrity of the Sundarbans is critical for biodiversity conservation, coastal resilience and the well‑being of millions who depend on the wider delta region.

• Key features: tidal mangrove ecosystem, tiger reserve, biosphere reserve.
• Ecosystem services: coastal protection, fisheries nursery, carbon storage.
• Main concerns: climate change, cyclones, habitat loss, human‑wildlife conflict.

For broader context and resources, see regional summaries and conservation program pages: Sundarbans delta overview, general information about the Indian protected area network, details about West Bengal conservation initiatives, and background on mangrove ecology, the Bengal tiger, reptilian fauna (reptile), invertebrate communities (invertebrate), and the salt‑water crocodile.