Reefs

Underwater structures formed from coral, rock, or other organic materials.

coral reefs reef systems

Reefs are underwater structures formed from the accumulation of coral, rock, or other organic materials. They provide habitats for marine life and protect coastlines from erosion.

Reefs derive from the Old English word 'rief,' meaning a ridge or bank.

Reefs are like underwater cities built by tiny animals called coral, providing homes for lots of fish and other sea creatures.

What are reefs? Underwater structures made from coral, rock or other materials
Where are reefs found? Mostly in warm, shallow waters
Why are reefs important? They provide habitats for many marine species and protect coastlines

coral reefs barrier reefs

geological formations marine habitats

fringing reefs barrier reefs atolls

coral rock algae

ocean sea

marine ecosystem natural object