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