Sutorina (Montenegrin: Суторина, pronounced [sûtɔrina], Italian: Sant'Irene) is a village and a river located in Herceg Novi Municipality in southwestern Montenegro.
The village is located near the border with Croatia, some three kilometers northwest of the Adriatic Sea in Igalo.
The Trebišnjica (Serbian Cyrillic: Требишњица) is a river in Bosnia and Herzegovina, and the right tributary of the Neretva. Before it was utilized for hydro exploitation via various hydrotechnical interventions and systems with different purposes, Trebišnjica used to be a sinking river, rising and sinking through its course before resurfacing at various places from the Neretva river below the Čapljina to the Adriatic coast, and along the coast from the Neretva Delta to Sutorina.
With a total length of 96.5 km (60.0 mi) above the ground, and roughly another 90 km (56 mi) below the surface, the Trebšnjica river is one of the longest sinking rivers in the world with the total of 187 km (116 mi) above and under the ground. In hydrological terms, it represents a sub-basin within the Neretva river basin.