The pupularity of of Gilis must have been initiated by divers which is now a great place not only for their scuba diving sites but also a place for real relaxing, such as swimming, snorkeling or just strolling on the beach with it's clear blue water and beautiful beaches. Besides the traveling facilities to Gilis has been fare enough, that the beauty of the islands also strongly interest people to spend their holiday in one of the islands, not only foreign travelers but also domestic travelers within Indonesia whom has more budget to spend, as holiday in Gilis means a little bit more expensive compared to availability of places at other areas. This due partly to the transporation from airport to the peir and from pier has to charter speed boat or motorized boat. The name Gili means island in Sasak language, so when we mention Gili island, it means "islands". We speak about the tree Gilis on west coast of Lombok, near Senggigi beach. Herlies 3 Gilis, namely Gili Air the closest to the shore, Gili Meno, and Gili Trawangan, the farthest. Gili Trawangan with the size of 3.5 sq. kms, is the largest of the three counting population 700 persons. According to Karl Muller an expert of Indonesian underwater, Gili Trawangan has the best sites for diving which is called Andy's Reef and Grand Clam. The presence of sharks are also often that can be approached up to 4 or 5 meters. Other than sharks there are mantas and remoras. The type of shark here is reef whitetips. Fish can found here were blue-line snappers, goldman's sweetlips, surgeonfish, Moorish idols and other common reef fish. Gili Meno with the size almost half of Gili Trawangan has 350 people. Gili Meno also has some hotels and bungalows like Gili Trawangan. The sites around Gili Meno is considered easy and plenty to see, so it is good for beginners. There are dozens of harlequin sweetlips, yellow margined moray, blue spotted stingray, lobsters, soldier fish, and angel fish. Gili Air, although it's size almost half of Gili Trawangan it has 1.000 population. Gili Air has best dive sites and also has more sharks on a narrow bottom channels which each as the resident of reef white tip sharks. According to Karl Muller the water of the Gilis profile seen from diving importance can be summed up as follows Gili is a name given by Sasak pople