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The entire skeleton, however, has an unusual blue color and therefore the species is commonly exploited for decorative uses. [8] The blue color of the skeleton (which is covered with a layer of brown polyps) is caused by iron salts. Blue coral can be used in tropical aquaria, and the crystalline calcareous fibres in the skeletons can be used ...
Coral calcium is a salt of calcium derived from fossilized coral reefs (primarily from limestone and coastal deposits). It has been promoted as an alternative, but unsubstantiated, treatment or cure for a number of health conditions.
The species heliopora coerulea is also known as "blue coral". [2] Species. Currently, the species known to be part of the genus Heliopora are: [1]
Octocorallia (also known as Alcyonaria) is a class of Anthozoa comprising over 3,000 species [1] of marine organisms formed of colonial polyps with 8-fold symmetry. It includes the blue coral, soft corals, sea pens, and gorgonians (sea fans and sea whips) within three orders: Alcyonacea, Helioporacea, and Pennatulacea. [2]
Montipora flabellata, known by the common name blue rice coral, is a species of coral in the family Acroporidae. It is found growing on coral reefs in tropical parts of the Indian and Pacific Oceans.
Precious coral, or red coral, is the common name given to a genus of marine corals, Corallium. The distinguishing characteristic of precious corals is their durable and intensely colored red or pink-orange skeleton , which is used for making jewelry .
P. branneri is an encrusting coral that forms patches up to 15 cm (6 in) in diameter with knobbly projections some 2.5 cm (1 in) across. The corallites are small and pentagonal, giving the surface of the coral a pitted appearance when the polyps are retracted. When the polyps are extended to feed, the surface appears fuzzy.
Zooxanthellae require a mixture of white and blue light to thrive within the coral, depending on the coral type. [11] Some corals, like the orange cup coral, do not require light, and rely on the plankton or free-floating nutrients as sustenance. [12] Coral reefs protect the coastline from erosion and storm damage.