Sixty percent of the world's human population lives within 60 km of the coastline.
The ever increasing numbers of people near the coast leads to higher demand for recreational opportunities in these coastal areas. One very popular activity is SCUBA diving and ecotourism. Divers have consistently shown they enjoy diving on artificial reefs with a preference for sunken vessels. These artificial reef types have been shown to harbor a wide variety and large numbers of fishes. However, these fishes are susceptible to heavy fishing pressure and a conflict exists between fishers who would like to harvest its resources and Eco tourists who prefer to observe and photograph these fishes. Fishing on these artificial reefs can rapidly reduce target fish populations and negatively impact local fisheries. However, with protection, some of these sunken vessels can provide a safe haven from fishers and would have a better likelihood of enhancing local fisheries, while still providing an excellent non-consumptive ecotour destination.
Available at: http://works.bepress.com/paul-arena/18/