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