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