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