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