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