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