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