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