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