Ratnagiri is a port city on the Arabian Sea coast in Ratnagiri District in southwestern Maharashtra, India. The district is part of Konkan division of Maharashtra. The city is known for the Hapus or Alphonso mangoes. Ratnagiri is the birthplace of Indian independence activist Lokmanya Tilak. Thibaw, the last king of Burma, alongside his consort Supayalat and two infant daughters were exiled to a two-storied brick mansion in Ratnagiri. The building is now known as Thibaw Palace. This place has many villages like Karla, Rajiwada, Mirkarwada, etc.

The Arabian Sea is a region of sea in the northern Indian Ocean, bounded on the west by the Arabian Peninsula, Gulf of Aden and Guardafui Channel, on the northwest by Gulf of Oman and Iran, on the north by Pakistan, on the east by India, and on the southeast by the Laccadive Sea and the Maldives, on the southwest by Somalia. Its total area is 3,862,000 km2 (1,491,000 sq mi) and its maximum depth is 4,652 meters. The Gulf of Aden in the west connects the Arabian Sea to the Red Sea through the strait of Bab-el-Mandeb, and the Gulf of Oman is in the northwest, connecting it to the Persian Gulf.