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