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