Interesting facts on coral reefs

Source:http://www.solcomhouse.com/


Fact: Coral reefs are among the oldest ecosystems on Earth.

Fact: Coral reefs are the largest living structure on the planet.

Fact: Although coral reefs cover less than 1% of the Earth’s surface, they are home to 25% of all marine fish species.

Fact: 500 million people rely on coral reefs for their food and livelihoods.

Fact: Coral reefs form natural barriers that protect nearby shorelines from the eroding forces of the sea, thereby protecting coastal dwellings, agricultural land and beaches.

Fact: Without the existence of coral reefs, parts of Florida would be under water.

Fact: Coral reefs have been used in the treatment of cancer, HIV, cardiovascular diseases and ulcers.

Fact: Corals' porous limestone skeletons have been used for human bone grafts.

Fact: It is estimated that coral reefs provide $375 billion per year around the world in goods and services.

Fact: If the present rate of destruction continues, 70% of the world's coral reefs will be destroyed by the year 2050.



Types of corals



Patch reef – an isolated, often circular reef, usually within a lagoon or embayment
Located in shallow water 10-20' (3-6 m)
Outer edge ringed by sand
Dominated by large star and brain coral colonies


Ribbon reef – long, narrow, somewhat winding reef, usually associated with an atoll lagoon

Table reef – isolated reef, approaching an atoll type, but without a lagoon


Bank Reef – Bank reefs are larger than patch reefs and are linear or semi-circular in outline
Bank Reef Scene
credit: U.S. Geological Survey
Located seaward from patch reefs
High species diversity
Characterized by spur and groove formation