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