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