Brusnik is an uninhabited volcanic island in the Croatian part of the Adriatic Sea. The island is part of the Dalmatian archipelago.
The island's name comes from the word brus ("whetstone"), because volcanic rocks from the island were used for making whetstones.
The island is located 12 NM west of Komiža, town on island of Vis,[1] and 2 NM south-west from the island of Svetac (Sv. Andrija).
The area of the island is 3 ha. Brusnik is 320 m long, 205 m wide, and has 30 meter high cliffs. The east coast is steep and difficult to reach, while the west coast is glacis toward the sea.
In 1951, the island was declared a geological monument of nature.On the island, there is the endemic species of black lizard (Podarcis melisellensis melisellensis[2]). The surrounding sea is rich with fish, especially blue fish.