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Who wouldn't be scared of these teeth?
They belong to the great white shark.
The great white is a consumer.
consumer
It hunts and eats other animals, like this unlucky fur seal.
The meat gives the shark lots of energy.
But where does this energy come from?
To find out, we have to look further down the food chain.
food chain
Like the shark, fur seals are consumers.
They eat a lot of fish.
So the energy in their meat comes from fish.
Some fish get their energy from eating other fish, while others feed on plant-like organisms called algae.
algae
Algae are producers.
producers
They are able to make their own food using energy from the Sun.
Algae produce the energy at the bottom of this food chain.
This energy eventually flows to the shark at the top.
So while it might be the most fearsome hunter in the ocean, the great white ultimately relies on this tiny organism to survive.
All consumers in a food chain rely on energy from producers.