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