Kalash Island Tiger Project in South 24 Parganas, is a part of Sundarbans National Park that lies at the estuary of the River Matla. Being very close to the core area of the forest visitors are allowed to the beach only with armed forest guards. Royal Bengal Tigers are seen here as they come to this area to drink sweet water in the pond near the camp. During winters, it is the breeding ground of the olive ridley turtles that arrive in great numbers on this beach for nesting. Kalash Island is also the home to many varieties of coastal birds .