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