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