 The Krk – Rab island group includes only uninhabited islands in addition to Krk and Rab, the largest among them Plavnik, Sveti Grgur, Prvić, and Goli Otok.The Krk – Rab island group is usually thought to represent a single archipelago with the island of Pag (southeast of Rab) and islets surrounding Pag.The availability of water varies significantly throughout the region.