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