India is home to around 25 species of turtles, which can be found in its rivers, lakes, and coastal regions. These species include both freshwater turtles and marine turtles. Here is an overview of some notable species:

Marine Turtles (Found along India’s coasts):

1. Olive Ridley Turtle (Lepidochelys olivacea):
   Known for their mass nesting behavior (known as arribada), these turtles are primarily found along the coasts of Odisha, Andhra Pradesh, and other parts of the eastern coast of India.
2. Green Turtle (Chelonia mydas):
   These turtles are found along India’s coasts, including the Andaman and Nicobar Islands and parts of the Gujarat coast.
3. Leatherback Turtle (Dermochelys coriacea):
   The largest of all sea turtles, they are found occasionally along India’s coasts, though their numbers are small.
4. Hawksbill Turtle (Eretmochelys imbricata):
   These turtles are found in the coastal areas of the Andaman and Nicobar Islands and the Lakshadweep Islands.

Freshwater Turtles (Found in rivers and lakes):

1. Indian Star Tortoise (Geochelone elegans):
   Found in the dry forests, grasslands, and agricultural fields, though it can also inhabit freshwater areas.
2. Indian Tent Turtle (Pangshura tentoria):
   Found in rivers and lakes across India, especially in the northeastern and southern parts.
3. Black Pond Turtle (Melanochelys trijuga):
   This species is found in slow-moving freshwater bodies like ponds and rivers in India.
4. Red-Crowned Roofed Turtle (Batagur kachuga):
   This critically endangered species is found in the rivers of northeastern India, particularly in the Brahmaputra River.
5. Brown Tortoise (Kachuga tecta):
   A freshwater species that is found in the rivers and wetlands of India.

Conservation Status:

Many of these species, particularly the marine turtles like the Olive Ridley and the freshwater turtles like the Red-Crowned Roofed Turtle, are facing threats from habitat destruction, poaching, and pollution. Conservation efforts are in place in various protected areas and marine sanctuaries, including initiatives like the Orissa Marine Sanctuary and the Sundarbans in West Bengal.

In conclusion, India is home to a diverse range of turtle species in both its freshwater and coastal environments, but many are under threat and require conservation attention.