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