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