Ustica Island is world wide known due to amazing marine life its waters contain. Ustica's Natural Marine Reserve attracts visitors who wish to meet and observe some of most amazing marine life species of world. Divers who go to this island are able to dive into very clear and warm waters which are a great environment in which to enjoy great variety of sea life it contains.

Besides Ustica and Linosa, this Sicilian area has many other islands in which divers can find a wide variety of spots to visit. Among spots divers might find at this area there are several walls, wrecks, reefs and rock formations of different types. Along with these formations, all these spots contain beautiful marine life species and formations which can be enjoyed while diving or even while snorkeling at some points.

One of main Medas Islands' diving spots which divers who enjoy cave dicing should not miss is Dolphin Cave. The Dolphin Cave or cavern is a very broad passage which could be described as a tunnel due to fact that has two entrances and divers can go from one point to other by diving it. It does not take a high amount of diving expertise to be able to go through this cave due to fact that it is of a big size and does not offer any important obstacle.

According to some studies that have been done in this Mediterranean area, this spot's underwater currents, winds and rich waters are very favorable for marine life development. This way, this spot contains a much broader marine life than others of region and is full of many marine creatures of different types.