参考答案：D

解析：[分析] 细节题型。 见文章第一句：The blue of the sea is caused by the scattering of sunlight by tiny particles suspended in the water．蓝色的海水是由于阳光对悬浮于水中的微粒造成散射形成的。第四、五句：This is caused by yellow pigments being mixed with blue water．Phytoplankton are one source of the yellow pigment．海水呈绿色是由于蓝色的海水和呈现黄色的浮游生物混合形成的。所以选项D正确。