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