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