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