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The blue coral is the only extant octocoral with a massive skeleton, [3] which is composed of fibrocrystalline aragonite (calcium carbonate). It is a hermatypic zooxanthellaete species with either blue or green-grey polyps located within its skeleton, with each containing eight tentacles. Its colonies are either columnar, plate like or branched.
This hard coral is common in shallow water exposed to surge, in the highest wave energy environments. [8] M. flabellata is less common and more restricted to shallow reef habitat, colonies of the species were found between 1 and 4 m depth. [9] The species is a broadcasting, simultaneous hermaphrodites that release egg-sperm bundles. [9]
Heliopora coerulea (Pallas, 1766) - blue coral Heliopora fijiensis † Hoffmeister, 1945 Heliopora hiberniana Richards, Yasuda, Kikuchi, Foster, Mitsuyuki, Stat, Suyama & Wilson, 2018 [ 2 ]
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. [1] Most coral reefs are built from stony corals, whose polyps cluster in groups.
Ocean color is the branch of ocean optics that specifically studies the color of the water and information that can be gained from looking at variations in color. The color of the ocean, while mainly blue, actually varies from blue to green or even yellow, brown or red in some cases. [1]
The Rost Reef (Norwegian: Røstrevet) is a deep-water coral reef off the coast of the Lofoten islands in Nordland county, Norway. The reef was discovered in 2002, about 100 kilometres (62 mi) west of the island of Røstlandet. It extends over a length of about 43 kilometers (27 mi), and has a width of up to 6.9 kilometers (4.3 mi). [1]
The Great Southern Reef is named after its world-famous neighbour to the north, the Great Barrier Reef, but has received a fraction of the attention and protection given to the latter. The Great Southern Reef is an important biodiversity hotspot and annually contributes more than AU$10 billion to the Australian economy. [2]