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