<P> Though many planktonic species are microscopic in size , plankton includes organisms over a wide range of sizes , including large organisms such as jellyfish . Technically the term does not include organisms on the surface of the water , which are called pleuston -- or those that swim actively in the water , which are called nekton . </P>
<P> Though many planktonic species are microscopic in size , plankton includes organisms over a wide range of sizes , including large organisms such as jellyfish . Technically the term does not include organisms on the surface of the water , which are called pleuston -- or those that swim actively in the water , which are called nekton . </P>
what are the largest members of the plankton
what are the largest members of the plankton
jellyfish
jellyfish