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