Introduction:
The Gangetic dolphin, also known as the Ganges River dolphin or the South Asian river dolphin, is a freshwater dolphin species native to the Indian subcontinent. It is one of the most endangered cetaceans in the world and is listed as a vulnerable species by the International Union for Conservation of Nature (IUCN).

Main Body:
Vulnerable Species:
The Gangetic dolphin belongs to the category of vulnerable species. This means that the population of these dolphins is declining, and they are facing a high risk of extinction in the wild.

Reasons for Vulnerability:
There are several reasons why the Gangetic dolphin is classified as a vulnerable species:

1. Habitat Loss: The primary reason for the decline in Gangetic dolphin populations is the loss and degradation of their habitat. The construction of dams, barrages, and water diversions has disrupted their natural riverine habitats.

2. Pollution: The pollution of rivers, especially with industrial and agricultural waste, has had a detrimental impact on the Gangetic dolphin. Contaminated water affects their health, reproductive success, and overall survival.

3. Fishing Practices: Indiscriminate fishing practices, including the use of nets and dynamite, pose a significant threat to the Gangetic dolphin. They often get entangled in fishing nets and drown, leading to population decline.

4. Collisions with Boats: The increasing boat traffic in rivers has also resulted in frequent collisions with Gangetic dolphins. These collisions can cause severe injuries or even death.

5. Climate Change: Climate change is causing changes in river flow patterns, altering the availability of prey for the dolphins. This can lead to malnutrition and further decline in their population.

Conservation Efforts:
To protect the Gangetic dolphin and prevent its extinction, several conservation efforts are being undertaken:

1. Protected Areas: Establishing protected areas and sanctuaries for the dolphins helps ensure their habitat is preserved and provides a safe space for their population to thrive.

2. River Clean-up Initiatives: Efforts to reduce pollution in rivers through wastewater treatment plants and awareness campaigns aim to improve the water quality for the dolphins.

3. Conservation Education: Educating local communities and stakeholders about the importance of the Gangetic dolphin and promoting sustainable fishing practices can help reduce accidental deaths and promote conservation.

4. Legal Protection: Governments have implemented laws and regulations to protect the Gangetic dolphin, including restrictions on fishing practices and the prohibition of dams in certain areas.

Conclusion:
The Gangetic dolphin is a vulnerable species due to various threats to its habitat and population. Efforts must continue to conserve and protect these dolphins to ensure their survival for future generations.