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

Validated name

Natural environment; Coral reefs

In taxonomy, a formerly invalid or unavailable name that has been made valid or available by the International Code of Zoological Nomenclature, e.g. By annulment or suppression of senior homonyms or ...

Scleroseptum

Natural environment; Coral reefs

One of many radiating calcareous partitions in the skeletal cup (corallite) of stony corals.

Decompression diving

Natural environment; Coral reefs

Scuba diving that requires in-water stops during ascent to the surface to allow off-gassing of nitrogen.

Official index

Natural environment; Coral reefs

In taxonomy, a list of names or works suppressed or declared invalid by action of the International Commission on Zoological Nomenclature.

Ossicle

Natural environment; Coral reefs

One of numerous small calcareous structures that form the exoskeleton of certain echinoderms. Their size,shape and location are highly variable, and they may be movable or fixed in position. They may ...

Sea urchin

Natural environment; Coral reefs

Sea urchins are echinoderms in the class Echinoidea, that possess a hard calcareous shell (test) armed with spines, which may be long and pointed, or short and pointed, or dull. The spines are used ...