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