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