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Recreational dive sites include specific places that recreational scuba divers go to enjoy the underwater environment. This includes publicly accessible recreational diver training sites and technical diving sites beyond the range generally accepted for recreational diving. In this context all diving done for recreational purposes is included. Professional diving tends to be done where the job is, and with the exception of the recreational diving service industry, does not generally occur at specific sites chosen for their easy access, pleasant conditions or interesting features. ==Bodies of water commonly used for recreational diving== * Sea and Ocean shorelines and shoals. These are salt water sites and may support high biodiversity of plant and animal life forms. Shipwrecks are also common on some coasts, and are very popular attractions for a large number of divers. * Lakes, usually containing fresh water. Large lakes have many features of seas including wrecks and a variety of aquatic life. Artificial lakes, such as clay pits, gravel pits, and quarries often have lower visibility. Some lakes are at high altitude and may require special considerations for altitude diving. Abandoned and flooded quarries are popular in inland areas for diver training and sometimes also recreational diving. Rock quarries may have reasonable underwater visibility as there is not as much mud or silt cause low visibility. As they are not natural environments and usually privately owned, quarries often contain features intentionally placed for divers to explore, such as sunken boats, automobiles, aircraft, and abandoned machinery and structures. * Rivers generally contain fresh water but are often shallow and murky and may have strong currents. * Caves containing water provide exotic and interesting, though relatively hazardous, opportunities for exploration. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Recreational dive sites」の詳細全文を読む スポンサード リンク
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