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