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