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Life in the ocean depends on plants called phytoplankton that make food with energy from the sun.
Food is the energy that makes life possible for all animals.
A food chain is a model of how energy moves from one organism to another in a community.
Here are three Antarctic food chains:
Here is one food web combining the three food chains above:
Phytoplankton in the oceans use energy from the sun to make food. This is the start for all marine food chains. Image source
Ocean food webs start with tiny plants called phytoplankton. Image source
Tiny shrimp krill are an important food source for many marine mammals and fish. Image source
Next step learning: find out about other marine animals and build a marine food chain of your own (remember it must start with a plant!)