preview

Coral Reefs: The Great Barrier Reef

Decent Essays

Today, most of the coral reefs were formed after the last glacial period. The most modern coral reefs are less than 10,000 years old. (Coral Reef, Wikipedia) The Great Barrier Reef is the biggest bulk of coral reefs in the world today. It is locating in Great Barrier Reef Marion Park in Australia and protected by the Australian government. GBRMPA assess the health of reefs every year. This year the extreme weather, particularly heat waves, cyclones, and flooding cause serious risk. El Niño leads the central of eastern Pacific Ocean’s sea surface temperature higher than normal. Recently, the Bureau announced that the early stages of El Niño showed up at tropical Pacific on 12 May 2015. (“Current conditions on the Reef ”) The compositions of the bulk of coral …show more content…

The calcium carbonate deposits and aragonite are also present in the coral reefs. If shell fragments and the remains of calcareous algae such as the green-segmented genus Halimeda add to the reefs can improve the ability to withstand damage from storms and other threats. Eniwetok Atoll has this structure. (Coral Reef, Wikipedia) Boring organisms such as sponges, worms, and bivalves and grazers such as parrotfish and sea urchins break down the coral skeletons. After they attack dead coral, the resulting sediment settles into spaces in the reef. Coralline algae, encrusting bryozoans, and minerals cement the dead organic matter stable structure of coral reefs. (“Coral & Coral Reefs”)
The coral reefs are necessary to ecosystems and humans. The coral reefs are important to ocean life because 9 million marine species cannot live without corals because corals are their food and shelter. Though there only 0.1 percent place have been covered by the

Get Access