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