Plankton
Plankton is at the bottom of the food chain in the oceans of the world.
There are two main types of plankton although the whole subject is quite complex:- phytoplankton are plant plankton.
- zooplankton are animal plankton.
Phytoplankton live near the surface of the ocean, because they need sufficient light photosynthesis to take place.
Zooplankton are small crustaceans and other animals that feed on phytoplankton.
One additional group is Bacterioplankton and this refers to the bacteria found in the plankton.
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