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