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