8. Bhitarkanika Wildlife Sanctuary, Odisha
Three rivers flow out to sea at Bhitarkanika in Odisha forming a tidal maze of muddy creeks and mangroves. Most of this 672-sq-km delta forms Bhitarkanika Wildlife Sanctuary, a significant eco-system containing hundreds of estuarine crocodiles that bask on mud flats waiting for the next meal to swim by. Pythons, water monitors, wild boar and timid spotted deer can also be seen. The best time to visit is from December to February.