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