The word reef comes from Middle Dutch. 1350-1400; Middle English refe (noun) < Dutch reef
Most are volcanic in origin (some are reef limestones).
A fringing reef
The Great Barrier Reef is a coral reef.
no
The Great Barrier Reef is the largest reef system in the world.
The barrier reef off of the coast of Australia is the Great Barrier Reef. This reef is the largest coral reef system in the entire world.
No reef system is longer. The Great Barrier Reef, at over 2300km long, is the world's largest reef.
the longest reef of north America is the longest reef in the continent
The Great Barrier Reef is the world's largest coral reef.
No. Although Osprey Reef is in the Coral Sea, where the Great Barrier Reef is located, it is actually separate from the Great Barrier Reef.
The name of a reef in the Cayman Islands is Cayman Reef.