The islands have a unique ecological function similar to the terrestrial ecosystems. Islands led to the
evolution of terrestrial ecosystems which is closed, during the specific satiety. Therefore all kind of
ecological levels are biological indicators that reflect the evolution of ecological processes and
systems are life-giving. Besides being in the midst of the sea, causing shallow coastal areas prepare
them for the presence of biological databases such as coral reefs, beds of plants, algae, and aquatic
breeding area is farmed environments including coastal and marine habitats are sensitive and
potentially attract tourists. In general, the Iranian islands can be divided into two categories: the
islands inland and offshore islands. Islands based on the location of the two islands, lake and river
islands are indivisible. But offshore Islands in the Persian Gulf and Oman Sea, with the majority of
them. In terms of the origin and genesis, the islands three coral reefs, deltaic sediment, and divided
the Zagros anticline. The coral reefs of coral reefs on a long accumulation of calcareous shell or
underwater reefs have been created and height. This area is one of the most important and the main
habitat of aquatic organisms, especially fish collection encompasses as saltwater ornamental fish
(marine) are of immense value.