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