With 35 kilometres (22 miles) length and 140 islands, some large, some small, in a sea area of about 320 square kilometres (124 sq mi), the Kornati are the densest archipelago in the Mediterranean Sea. From northwest to southeast (from the island of Balabra to Samograd), and from northeast to southwest (from Gangarol to Mana) they stretch for 13 km (8 miles). The name of the archipelago is the plural form of the name of the largest island, called Kornat. There are no permanent settlements in Kornati. Simple houses in well-protected coves such as Vrulje, Kravjačica, Lavsa and others are used by mainland landowners as temporary shelters. Most of the land owners are from the island of Murter and Dugi Otok.