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).
prokaryotes
the ocean
zooplankton
algae
Zooplankton are tiny animals.
phytoplankton
eukaryotes
Hundreds of cells
Thousands of cells
A few dozen cells
Millions of cells
To scare away predators
Just for fun
To see in the dark
To attract a mate
drifting or wandering
microscopic
aquatic (water-living)
plants