Sunset on the backwaters

 Kerala (help·info) or Keralam (Malayalam: കേരളം, Kēraḷam) is an Indian state located on the Malabar coast of south-west India. It was formed on 1 November 1956 by the States Reorganisation Act by combining various Malayalam speaking regions.

The state has an area of 38,863 km² (15,005 sq mi) and is bordered by Karnataka to the north and northeast, Tamil Nadu to the east and south, and the Arabian Sea on the west. The width of the state varies from 11km to 121km. The city of Thiruvananthapuram is the state capital. Kochi,Kozhikode,Thrissur,Kottayam and Palakkad are other major cities. According to a survey by The Economic Times, five out of ten best cities to live in India are located in Kerala. Kerala is a popular tourist destination for its backwaters, yoga, Ayurvedic treatments and tropical greenery.

The Kerala backwaters are a chain of brackish lagoons and lakes lying parallel to the Arabian Sea coast (known as the Malabar Coast) of Kerala state in southern India. The network includes five large lakes linked by canals, both manmade and natural, fed by 38 rivers, and extending virtually half the length of Kerala state. The backwaters were formed by the action of waves and shore currents creating low barrier islands across the mouths of the many rivers flowing down from the Western Ghats range.

The Kerala Backwaters are a network of interconnected canals, rivers, lakes and inlets, a labyrinthine system formed by more than 900 km of waterways, and sometimes compared to the American Bayou. In the midst of this landscape there are a number of towns and cities, which serve as the starting and end points of backwater cruises. National Waterway No. 3 from Kollam to Kottapuram, covers a distance of 205 km and runs almost parallel to the coast line of southern Kerala facilitating both cargo movement and backwater tourism.

The backwaters have a unique ecosystem - freshwater from the rivers meets the seawater from the Arabian Sea. In certain areas, such as the Vembanad Kayal, where a barrage has been built near Kumarakom, salt water from the sea is prevented from entering the deep inside, keeping the fresh water intact. Such fresh water is extensively used for irrigation purposes.

Many unique species of aquatic life including crabs, frogs and mudskippers, water birds such as terns, kingfishers, darters and cormorants, and animals such as otters and turtles live in and alongside the backwaters. Palm trees, pandanus shrubs, various leafy plants and bushes grow alongside the backwaters, providing a green hue to the surrounding landscape.