Crocodiles are ambush hunters and apex predator of river systems of the India.  

• There are three crocodilians species found in India, Mugger crocodile, the Gharial and the Saltwater Crocodile.  
• Mugger crocodile and the gharial are found throughout the Indian subcontinent and they are ambush hunters, mostly prey on fish, reptiles, birds and mammals.  
• Saltwater Crocodiles are the largest species of crocodilians family and largest of all living reptiles in the world.  

• The apex predator found in saline and brackish mangrove swamp forest of Bhitarkanika and Sunderbans.  
• Bhitarkanika National Park in Kendrapara district of Odisha is a separates swamp region and mangroves forest.  
• The park is home to largest Saltwater Crocodiles in India and many other species of reptiles such as White Crocodile, Indian Python and King Cobra. 

Source: The Hindu