Milos has rare species of fauna and flora, a large number of habitats, unique geological formations and invaluable minerals.

Western Milos, which belongs to the Natura 2000 network of the Ε.Ε., preserves a significant number of rare and endangered endemic species of reptiles, birds and invertebrates. The area is unique thanks to the presence of two species protected by the European Union as a priority: the Viper of Milos and the Mediterranean Seal. 

The rocky formations of the coastline and the steep slopes of the island comprise natural shelters for several species of fauna and flora, while, along with the peek of Profitis Elias, they host the nests of rare predatory birds.

Milos is characterized by manifold rocky formations, such as the boulders of “Kleftiko” emerging from the sea, the volcanic rocky islets “Arkoudes (Bears)” and the vertical volcanic “sticks” – known as “Glaronisia (Seagull islands)”.

There are many caves on the island – among them the caves of “Papafragka” and “Vromolimni” – that were used as base camps for pirates, secret places for cult worship and hiding places in times of war.