PlanktonPlankton are the unsung heroes of planet Earth. Passive drifters through the world's seas, oceans, and freshwater environments, most are invisible or very small, but some are longer than a whale. They are the global ocean's foundation food, supporting almost all oceanic life, and they are also vitally important for land based plants, animals, and other organisms. Plankton provides an incomparable look at these remarkable creatures, opening a window on