Karnataka's coastline called Karavali stretches 300 km between Mangalore in Dakshina Kannada district and Karwar in Uttara Kannada district. The coastline of Karnataka has been along the eastern shore of Arabian Sea. Karnataka has one major and ten minor ports in this coastal belt. Kali, Belekeri, Gangavali, Aghanashini Sharavathi, Sharabi, Kollur, Gangolli, Sitanadi, Gurpur and Netravati are the important rivers in this belt which empty into the Arabian sea. Sea erosion, migration of river mouths, siltation of ports and harbours are some of the problems common to this belt.