Košljun is a tiny island in Puntarska Draga bay off the coast of KRK, facing Punat. It is approximately 300 meters in diameter and covers an area of 6.5 hectares, but is rich in vegetation. The only inhabitants are a group of Franciscan monks living in St. Mary's Monastery.
You can visit the island with fast taxi boats from Punat or you can get there on your own (kayak, canoe could be an option).