Reef
A reef is a submerged ridge of rock, coral, or sand that can be found in shallow water near the surface of the ocean. Reefs can be dangerous to ships as they can cause damage to the hull or even cause a ship to run aground. However, reefs are also important ecosystems that provide habitats for a diverse range of marine life. Coral reefs, in particular, are home to thousands of species of fish, plants, and other organisms. They also protect coastlines from erosion and storm damage. Reefs are important to the maritime industry as they can be used as navigational aids and as fishing grounds.
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