What is a reef?

What is a reef?

A reef is a ridge of rock or coral or similar material lying beneath the surface of natural water – usually ocean water. 

A coral reef is in tropical ocean water. 

A reef is usually in shallow water near the coast – and not in deep water.

An artificial reef is a person-made underwater structure that is used to attract fish so that they can form their own communities. A shipwreck is an example of an artificial reef. A series of car tyres place deliberately in a location underwater is an example of an artificial reef.

Aquaria and marine parks have tanks with rocks and corals to make it look like a reef and as close to the natural habitat of the fish. 

Photographer: Martina Nicolls

Martina Nicolls: SIMILAR BUT DIFFERENT IN THE ANIMAL KINGDOM

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