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