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