 might be in the ocean but it's just saying hey i see phytoplankton there with pace we now have all the colors of the rainbow a continuous spectrum from the ultraviolet the purples all the way into the reds and by looking at all the greens for example suddenly these little differences are standing out and from that you can start saying hey i think there is a phytoplankton community there that is different than the one you know in this other body of water so