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