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