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