Zavratnica is the defining attraction near Jablanac — a narrow inlet that cuts 900 metres into the Velebit mountains, its sheer limestone walls rising to 100 metres on either side. The water inside is deep, still, and extraordinarily clear. Swimming here is one of the finest experiences on this stretch of the Adriatic coast: cool, sheltered, and completely different from the open sea beaches a few kilometres away.
The inlet is part of the Northern Velebit National Park. A footpath from Jablanac village reaches the entrance in about twenty minutes. From the mouth, a trail continues along the northern wall to the head of the inlet. You can also reach Zavratnica by kayak or small boat from Jablanac harbour, which gives the best views of the walls rising above you. Bring your own food and water — there is nothing at the inlet itself.