As it spread through the sunlit shallows, 当浮游生物遍布阳光照耀的浅水时
But not all food comes from the sunlit world above. 不过不是所有的食物来自阳光普照的海面上
Marine snow, detritus from the creatures swarming in the sunlit waters above. 海雪是海洋表面上的生物产生的小型有机物碎屑