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