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