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