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