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