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