Coral reefs

Coral reefs

Coral reefs are structures formed from the calcium carbonate secretions of corals. They are colonies of tiny animals in marine areas containing few nutrients.

Industry: Natural environment

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Coral reefs

Vernacular name

Natural environment; Coral reefs

The colloquial or common name of a taxon, i.e., in any language or form other than that of biological nomenclature. Vernacular names have no status in nomenclature.

Common ancestor

Natural environment; Coral reefs

The most recent ancestral form or species from which two different species evolved.

Cell

Natural environment; Coral reefs

The smallest unit of living matter. All organisms are composed of cells and cell products (Cell Theory). Organisms exist either as single cells (unicellular) or as multicellular units.

Covalent bond

Natural environment; Coral reefs

A bond between two or more atoms that is provided by electrons that travel between the atoms' nuclei, holding them together but keeping them a stable distance apart.

Open circuit scuba

Natural environment; Coral reefs

A diving apparatus in which exhaled air is expelled into the water as bubbles; no part is rebreathed by the diver. It is most commonly used in recreational scuba diving.

Depth contour

Natural environment; Coral reefs

A line on a nautical chart connecting points of equal depth.

Myotome

Natural environment; Coral reefs

Any segment of embryonic mesoderm that develops into skeletal (voluntary) muscle in the adult; any of the segmentally arranged blocks of muscle in lower vertebrates, such as fishes.