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