海南岛地处南海北部海区。沿岸表层水温受季节性气候变化影响。一般认为造礁珊瑚生长的海水温度下限为20℃。Ph·H·奎年认为25—30℃是造礁珊瑚大量繁殖的温度范围。海南岛沿岸海水的月平均温度,除北部(海口)1、2月份低于20℃外,其他都高于20℃。每年4—11月的沿岸水温为25—30℃,属造礁珊瑚繁殖的最佳范围。但北岸和 Hainan Island is located in the northern part of the South China Sea. Coastal surface water temperature is affected by seasonal climate change. It is generally believed that the lower limit of seawater temperature for reef growth is 20 ° C. Ph · H · Kui Nian that 25-30 ℃ is reefs coral breeding temperature range. The monthly average temperature of seawater along the coast of Hainan Island is higher than 20 ℃ except that the northern part (Haikou) is lower than 20 ℃ in January and February. From April to November each year the coastal water temperature is 25-30 ℃, is the best range for reef reef breeding. But North Shore and