In particular , copepods are prey to forage fish and jellyfish , both of which can assemble in vast , million - strong swarms .
Planktonic copepods are usually the dominant members of the zooplankton , and are in turn major food organisms for many other marine animals .
Copepods are prey to forage fish and jellyfish , both of which can assemble in vast , million - strong swarms .
Planktonic copepods are usually the dominant members of the zooplankton , and are in turn major food organisms for many other marine animals .