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