Lošinj is the 11th biggest island on the Adriatic Sea, 33 km long, with the width varying from 4,75 km in the north and middle of the island, to 0,25 km near the town of Mali Lošinj. The total coastline of the island is 112,7 km. The whole coastline abounds in attractive bays and coves, ideal for swimming and sunbathing.
Lošinj’s highest hill is the wooded hill of Osoršćica (588 m), which is some 10 kilometres long and stretches along the northern part of the island. On the island of Cres, which is generally higher than Lošinj, the highest hill is Sis (650 m). Cres has a freshwater lake - Vrana, which is a natural phenomenon. It is needless to say that so much drinking water on a karst island represents a real treasure. This enormous natural tank of fresh and healthy water contains more than 200 million m³ of water and supplies all the towns and villages on the islands with fresh drinking water.
Many, many years ago the island of Cres and Lošinj were one, only after the channel of Osor was excavated, probably during the Roman period, two islands emerged. Today a bridge connects the islands and in the geographically trafficable sense they form one unit.
source: TZ Mali Lošinj