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