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