Although humans swim in the ocean we are not of the Nekton family. Nekton is the name given to all those animals that swim actively at various levels in the sea. These animals include fishes, squids, whales and many varieties of crustaceans such as prawns. Many animals belong to the Nekton group only during their adult life, at their younger stages they drift at the surface with the plankton.
This worksheet comes from the linked workbook and has this assignment and lots of other fun science worksheets related to the science names projects.