6 years & up. The Plankton Net helps make science go from boring to awesome! Catch plankton in ponds, lakes, and even in ocean water. Discover discover different types of plankton, such as a copepod, a daphnia, or a rotifer. Once the plankton is caught, place them in a rovable bottle to magnify your small specimens! Includes a waterproof identification chart to help kids discover different species of plankton.