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