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