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