![Tiny crab larva zooplankton.](http://static.sciencelearn.org.nz/images/images/000/000/148/full/Crab-larva20150812-31677-1fn1yfw.png?1674163775)
Some zooplankton species are permanently free-floating in the water column; others may only be present for short periods of their life cycle, like this crab larva, for example.
Some zooplankton species are permanently free-floating in the water column; others may only be present for short periods of their life cycle, like this crab larva, for example.