Barrier Reef

Barrier Reef (TV series)

Barrier Reef is an Australian television series that was first screened domestically in 1971. However, nineteen episodes had already premiered on British television on BBC1 between 5 October 1970 and 15 February 1971 and four more aired between 5 April and 3 May 1971, in advance of Australian broadcast.

Coral reef

A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups.

Reef

A reef is a ridge or shoal of rock, coral, or similar relatively stable material lying beneath the surface of a natural body of water. Many reefs result from natural, abiotic (non-living) processes such as deposition of sand or wave erosion planing down rock outcrops. However, reefs such as the coral reefs of tropical waters are formed by biotic (living) processes, dominated by corals and coralline algae. Artificial reefs, such as shipwrecks and other man-made underwater structures, may occur intentionally or as the result of an accident. These are sometimes designed to increase the physical complexity of featureless sand bottoms to attract a more diverse range of organisms. They provide shelter to various aquatic animals which help prevent extinction. Another reason reefs are put in place is for aquaculture, and fish farmers who are looking to improve their businesses sometimes invest in them. Reefs are often quite near to the surface, but not all definitions require this.

barrier reef

Noun

1. A reef separated from the adjacent coast by a channel or lagoon; a reef that forms a barrier between the open ocean and the waters of the shoreline.