Located in the deltaic region of Brahmani and Baitarani on the north - eastern coast of Orissa is the Bhitarkanika National Park. Supporting a wide variety of wetland habitats ranging from tidal rivers and creeks to riverine islands and intertidal zones, apart from coastal wetlands along the eastern boundary, it is a hot-spot of biodiversity. Home to the largest population of giant salt water crocodile in India and more than 215 species of avifauna, it is the second largest viable and contiguous Mangrove Eco-System in India which Harbours more than 70 species of Mangrove and its associates.
Bhitarkanika is also home to several
mammals. Five species of marine dolphins have been recorded from the area.
Notable among the other mammalian fauna of Bhitarkanika are the striped hyena,
the fishing and jungle cat, smooth - coated otter, civet, Indian porcupine,
wild boar, spotted deer and sambar.
World over, Orissa is known for its arribada’s
– synchronized mass nesting of Olive Ridley Turtles. These turtles nest here in
thousands every year during winter at three beaches: Devi, Gahirmata, and
Rushikulya. Gahirmatha beach, which forms the eastern boundary of Bhitarkanika
Wildlife Sanctuary, supports the largest known nesting beach of olive ridley
sea turtles in the world. Nearly half a million Olive Ridleys nest every year
at Gahirmatha. Besides, the coastal waters off Gahirmatha are a major
mating area for the olive ridley sea turtle that migrate to this coast every
winter.