Zooplankton are tiny animals.
Millions of cells
Thousands of cells
Hundreds of cells
A few dozen cells
To see in the dark
Just for fun
To attract a mate
To scare away predators
it makes the water saltier.
it makes the water more acidic.
it kills large predators like sharks.
algae
prokaryotes
the ocean
zooplankton
plants
drifting or wandering
aquatic (water-living)
microscopic
phytoplankton
eukaryotes
All plankton are microscopic (too small to see without a microscope).