Science glossary film: Food chain

A food chain simply states which organisms consume each other, and shows how energy moves through living things in an ecosystem. A simple marine food chain could start with phytoplankton, which are consumed by zooplankton, which are eaten by small fish, which are eaten by larger fish and sharks. At the bottom of all food chains are producers, such as algae or plants, which can harness their energy directly from the Sun.

A simple marine food chain could start with phytoplankton, which are consumed by zooplankton, which are eaten by small fish, which are eaten by larger fish and sharks. At the bottom of all food chains are producers, such as algae or plants, which can harness their energy directly from the Sun.