The Louisiade Archipelago is a string of ten larger volcanic islands frequently fringed by coral reefs, and 90 smaller coral islands located 200 km southeast of New Guinea, stretching over more than 160 kilometres (99 mi) and spread over an ocean area of 26,000 square kilometres (10,000 sq mi) between the Solomon Sea to the north and the Coral Sea to the south. The aggregate land area of the islands is about 1,871 square kilometres (722 sq mi), with Vanatinai (Tagula) being the largest.