Starfish play a big role in the ocean. They help keep the number of other animals in balance. Starfish eat animals like mussels and clams. If there were too many of these, they would crowd out other sea life. Some starfish eat coral-eating animals, which helps protect coral reefs.
Starfish are also food for other animals like big fish and seabirds. Scientists study starfish to learn about ocean health. When there are many healthy starfish, it usually means the ocean is healthy too.
How do starfish help the ocean?
By making wavesBy cleaning the waterBy keeping other animal numbers in balanceBy making oxygenWhat might happen if there were no starfish to eat mussels and clams?
The ocean would be cleanerThere would be too many mussels and clamsFish would have more foodCoral reefs would grow fasterHow do some starfish help protect coral reefs?
By eating coral-eating animalsBy making shade for the coralBy cleaning the coralBy building new reefsWhat can scientists learn from studying starfish?
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