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