When you look at the ocean from above, you’re seeing light reflected from the sky as well as the actual water color. When the water is shallow, you may also be seeing the color of the ocean bottom, plus plants such as seaweed. read more
They say that the ocean reflects the sky, but i don't really think that's true because when you're on a plane you could see that certain parts of the ocean is green and some is blue. read more
Apparent color is the color of the whole water sample, and consists of color from both dissolved and suspended components. True color is measured after filtering the water sample to remove all suspended material. read more