Increasingly, though, swimmers, sailors and even those who monitor the sea with the help of satellites are encountering highly visible algal blooms known as red tides.

• 然而，由于海藻爆发生殖产生的赤潮现象，发生次数却越来越多，这是游泳者、水手、甚至是通过卫星检测海域的人有目共睹的。