what is the name of the coral that makes reefs?
478030
all of them, a combined effort over hundreds of years
2787
Molluscs have an organ known as a mantle. It is the body wall covering beneath the shell. The outer layer of this organ secretes calcium carbonate using calcium from its blood. They can also secrete some proteins which give the shells colors and patterns while the mollusc is living. The inner layer of the shell is composed of nacre, which is a composite of calcium carbonate and organic materials. This is the material that makes the inner part of the shell iridescent, and the coating that makes pearls.
647475
1. Coral reefs:\nThere are many types of algae that live inside and outside corals. \nMainly Caulerpa and Corallina species, and many more are named there:\nhttp://www.com.univ-mrs.fr/IRD/atollpol/ecorecat/ukalgrec.htm\n\nInside coral polyps themselves, there are symbiotic microscopic algae. Their common name is "zooxanthellae", but they are in fact multiple species of Dinoflagellata:\nhttp://www.marinebiology.org/coralbleaching.htm\n\n2. Tropical algae: again, far too many to list.\nLook around the Seaweed Site, and pick ones that grow in tropics. http://www.seaweed.ie/\n\n3. Besides algae, there are seagrasses (flowering plants living in the ocean):\nhttp://en.wikipedia.org/wiki/Seagrass
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Log onto this website for your answer. We all appreciate the question and e-conversation anyway.\n\nhttp://en.wikipedia.org/wiki/Great_Barrier_Reef
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Calcium Carbonate .. \n\nCheck this web site its nice ... \n\nhttp://www.mbmp.org/corals.htm
351257
Probably a mutualism in which coral provides structure, support, and security, while the algae provide energy for the coral.
350057
depends on what kind of substrate...if its barnacles on coral, substrate is biotic. It seems to be abiotic usually.
141780
sorry.. your Question seems truncated...\n\nShould be the Sperm Whale I think
64154
Great Barrier Reef (Australia)-- large tropical reef system, most operators do sheltered easy diving. The reef is a few hours' boat ride from most of Far North Queensland.
570677
try some of these websites:\n\nwww.mcwdn.org/Animals/Flatworm.html\n\nwww.k12.hi.us/~kapunaha/student_projects/ reef_org/worms/flat_worms.htm\n\nen.wikipedia.org/wiki/Flatworm
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Most coral (if not all) used to be volcanic. While the volcano erodes down to just below sea level, the coral builds up to just above sea level. The result is called an atoll. \n\nWhile there are many underwater volcanoes--probably more than there are above the ocean's surface--they are not islands unless they are above water. Therefore, as a general rule, volcanic islands are much larger than coral islands.\n\nThere's an animated illustration of the formation of atolls in the article linked below.
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Coral lives in a symbiotic relationship with algae.  When the coral experiences a stress event (water temperature change, disesase, pollution, etc.) it may release the algage contained with it.  The pigmentation of the coral is lost with the algae leaving the coral with a bleached or completely white appearance.
621455
Old car tyres (or tires if you are from the US) filled with concrete can be used to create artifical reefs.
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One large marine snail, Charonia tritonis, feeds on the crown of thorns starfish. When these beautiful snails were overcollected for their shells, the crown of thorns multiplied rapidly and began destroying parts of the Great Barrier Reef. The snails are now protected and the situation is coming back under control.\n\nCharonia tritonis shell: http://www.hausdernatur.de/hnctrit.jpg\n\nCrown of thorns: http://ryanphotographic.com/images/JPEGS/Acanthaster%20planci%20Crown-of-thorns.jpg\n\nCharonia feeding on crown of thorns: http://members.cox.net/arniesdca/shells/charoniaOnCrownofTh.jpg\n.
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http://ccma.nos.noaa.gov/images/biogeo/conch.gif
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yes. Latin name is Heliopora coerulea. Living specimens are brown, blue-gray, or gray , but the skeletons of dead heliopora are blue---so it is prized for its color.\nCalled blue coral, blue ridge coral, blue fire coral.\n\nPhotos: \nhttp://www.nps.gov/archive/npsa/NPSAcorl/Helcoeru.htm\nhttp://animal-world.com/encyclo/reef/soft_cor/bluecoral.php\nhttp://www.coralreefecosystems.com/gallery_corals.htm#Heliopora%20coerulea\nhttp://www.arkive.org/coral/Coral/heliopora_live.html
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Most of the Caribbean islands are coral keys, which means they are equivalent to a sandy desert as far the quantity and variety of life found there. It is the river estuaries, rich in plant and animal life, that make the water murky looking along these mainland coastlines. It also makes them some of the best fishing grounds to be found. If you don't trees and grass you live in a desert.  If you don't like water thick with pea green algae you live on coral key island.