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