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