爱沙尼亚摄影师Kaido Haagen拍摄的一只灰白色海豹从水底植物"云朵"中探头照片获得最佳图片。
Photograph by Kaido Haagen, A gray seal pokes its head through "clouds" of plant life in a winning picture by Estonian photographer Kaido Haagen.
当水面上大量爆发的浮游植物触发产生大量的有机物质，而这些有机物质随后下沉到水底的时候，死亡带就形成了。
Dead zones form when big blooms of phytoplankton at the surface trigger large quantities of organic matter, which then sink to the bottom.
水底深处有美丽的树木和植物。
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