Osmolis beach is located within the beautiful Osmolis forest park in Trsteno. The beach can only be accessed from the sea, so it is quite popular among boaters who anchor their boats or pass through the area. The coast is rocky, the sea deep, which is ideal for swimming and diving. Above the beach stretches a long forest all the way to the Arboretum Trsteno. Near the beach there is a small cave which is a great attraction to explore.