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