Bhitar Kanika National Park in Balesore district in an area of 167sq.km is better known as a marine park. The park with its mangrove forests in the rivers Brahmani- Bhaitarani Delta and creeks, estuaries, back water, accreted land and mud flats was mainly established to protect the saltwater crocodile and other marine inhabitants of the region. It was notified as a Crocodile sanctuary in 1975 and a crocodile breeding centre has been established by the Orissa Government.
The park contains tidal swamp forests consisting of an abundance of mangrove, saltwater and brackish water mixed species such as Causarinas, Thespia, grasses like indigo bush etc. It is the second largest viable stretch of mangrove forest in the Indian mainland. The Fauna of the park include Olive ridley turtles (sea turtle), saltwater crocodiles, wild pigs, rhesus monkeys, leopard, wild boar, hyena, jungle cat, sambar, giant squirrel, water monitor, chitals, king cobra, python, fishes besides insects and other micro fauna. Birds found are strokes, ibis, white necked sea eagle and fish eagle etc. The best season for visiting the park is winter (November to February). The park situated along the Gahiramatha Coast is a haven for thousands of marine species especially the Olive ridley turtles which come here to lay eggs during the nights in winter. The giant Pacific Ridley sea turtles believed to come as far away as South America nest on the Gahirmatha Coast.
An area of 145 Sq.kms. have been notified as Bhitarkanika National Park vide Notification No.19686/F & E dated 16.9.1998 of Forests & Environment Department, Govt. of Orissa. It has much significance with regard to ecological, geomorphological and biological background which includes mangrove forests, rivers, creeks, estuaries, back water, accreted land and mud flats
Located in the Indian state of Orissa, the Bhitar Kanika National Park is one of the few marine parks in India. The flora and fauna of this park has a lot of similarity to the Sunderbans in West Bengal except that there are no tigers here. The park was established to protect the saltwater crocodile and other marine inhabitants of the region. The park has special status of Crocodile Sanctuary and it was notified in 1975.