Coral Reefs
In this video you will see what the coral reefs purpose is and how they help the ocean. They may just look like rock and colour but they help the ocean a lot.
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Coral reefs are beautiful plants and live on the ocean floor also known as the "marinas trench". Coral reefs are like the under water trees, they help the ocean stay healthy and protect over 100 species of fish and crabs. These under water trees give under water oxygen to fish and other marine species they also filter the water. As you can see in the picture coral reefs are very colourful and also make incredible houses and decoration for the sea or ocean.
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