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