Animals, that live in the water column but cannot actively swim against currents. While most zooplankton are tiny, like copepods, krill, and the larval stages of larger species, some are much larger, such as salps and jellies. Many species of zooplankton spend daytime in deeper water (avoiding light and predators), moving towards the surface to feed at night, in a process called vertical migration.
Breeding season
Time in the year when females give birth to their calves or pups.






















































































































