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