The main causes, which tourism sector can impair coastal ecosystem, are direct discharge of untreated sewage into the ocean or disposal of large quantities of solid waste on the coast instead of a proper treatment. Moreover, some typical activities there such as tourist yachts, motor boats and cruise ships are also the main source of oil contaminants for the sea. Further, high consumer of natural resources due to tourist’s demands can worsen the lack of fresh water, which already known as an extremely scare resource in virtually coastal areas and high demand of seafood may lead to overfishing situation in destination, too. Finally clearing natural habitats such as cutting down mangroves, damage coral reefs; removal sand, and so on all contribute to coastal habitat degradation (UNEP 2009: 14; UNEP 2006: 14-15).