The document discusses the coastal plains found in India. It describes the key features of coastal plains, noting they are flat, low-lying areas adjacent to large bodies of water. It then provides details on the eastern and western coastal plains of India, describing their geographic locations, climate conditions, vegetation, and division into different regions. The eastern coastal plains stretch from Tamil Nadu to West Bengal along the Bay of Bengal, while the western coastal plains run between Gujarat and Kerala along the Arabian Sea. Both experiences tropical climates and receive significant rainfall from seasonal monsoons.