The Rann of Kutch, located in the Thar Desert of Gujarat, India, is a vast seasonal salt marsh. 

Geological evidence suggests it was once a shallow extension of the Arabian Sea. 

Over time, due to a combination of factors like tectonic plate movement and climatic changes, the sea level receded repeatedly, leaving behind saline deposits and creating the marshland we see today. 

During the monsoon season, the Rann fills with water, transforming into a shallow lake, but dries up again in the summer, leaving behind a vast expanse of cracked white salt flats.

Bhitarkanika Mangroves: Located in Odisha, Bhitarkanika Mangroves is a protected wetland area and a UNESCO Ramsar site. It is home to saltwater crocodiles, migratory birds, and various plant species. The mangroves provide coastal protection and support local fishing communities.

Marakkanam Salt Pans: Marakkanam, in Tamil Nadu, is one of India's largest salt-producing regions. The salt pans are a major source of salt production, and the area also attracts migratory birds, including flamingos.

Naupada Swamp: Located in Andhra Pradesh, is an important wetland for migratory birds and aquatic life. The swamp supports a wide variety of wildlife, including endangered species like the smooth-coated otter.