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