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