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