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