Ocean Food Chains
Describe a simple ocean food chain: tiny plants (phytoplankton) are eaten by small animals, which are eaten by bigger fish, which are eaten by top predators like sharks — showing that all ocean life depends on others for food
What a learner can do afterwards
- Describe a food chain with at least three levels
- Identify that ocean food chains start with tiny plants or algae
- Explain that bigger animals eat smaller ones in a chain of dependence
The lesson
Every ocean animal needs food. Food connects them in a chain. Tiny plants start every ocean food chain.
Tiny plants called phytoplankton float in the water. Small fish eat the phytoplankton. A big fish eats the small fish. A shark eats the big fish.
Every animal in the chain needs the one before it. If tiny plants disappear, the whole chain breaks.
Tiny plants feed small fish, which feed big fish, which feed sharks.
Watch it
Where it sits
Learn first
This opens up
Where this leads
Jobs that lean on this skill. Follow one to see everything it is built on.
8 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.