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