Coral Reef Ecosystem Facts: An Underwater Guide To Read! | Kidadl


Coral Reef Ecosystem Facts: An Underwater Guide To Read!

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Coral reefs are one of the world's most varied ecosystems.

These structures are not only stunningly attractive, but they are also vital to the existence of life on Earth. Coral reefs are some of the world's most significant ecosystems, and because of the broad range of plants and creatures they support, they've been dubbed 'the rainforests of the sea.'

  • Coral reef ecosystems are made up of hundreds of soft-bodied animals, known as coral polyps, that accumulate calcium carbonate layers over time.
  • Other plants and animals, including a wide range of naturally colorful tropical fish, are drawn to these surroundings.
  • Fringing reefs, barrier coral reefs, and coral atolls are the three types of coral reefs.
  • Barrier reefs are further out to sea than fringe reefs, which are closer to the land. The name 'barrier' reef comes from the fact that they protect shallow warm waters from the open sea. Many species of tropical fish and uncommon plants benefit from this protection.
  • Atolls are so huge and usually appear on the margins of lagoons; they are frequently mistaken for islands.
  • Large, visible coral reefs, such as Australia's Great Barrier Reef, are between 5,000 and 10,000 years old.
  • The Great Barrier Reef has expanded through time to incorporate many corals and spans 2,600 mi (4180km), passing through 500 islands.
  • The Red Sea coral reef surrounds the majority of the Red Sea coast with shallow undersea shelves and vast fringing reef systems, which are by far the most common reef types.
  • Corals are critical to regulating carbon dioxide levels in the ocean since they are massive, live, breathing organisms. As a result, coral reef ecosystems are crucial in mitigating the effects of global warming.
  • Coral reef species have been identified to be useful in the treatment of cancer and other ailments, according to scientists. Proteins that treat cancer cells have been developed by scientists.


Continue reading to learn more information about coral reefs and facts about these ecosystems.

Shoreline Protection Of Coral Reef Ecosystems

A coral reef is an underwater habitat that is characterized by reef-building corals.

  • Many small islands would not exist if coral reefs did not safeguard shorelines by absorbing wave energy.
  • The structural stability of the sea bed is improved by coral reefs. This is because they promote the growth of seagrass and other living creatures.
  • The better the ocean bed is held together, the more plant and marine life there is. This mitigates the effects of storms and tidal surges, reducing beach erosion.
  • Coastlines protected by coral reefs are also less prone to erosion than those that are not. Reefs can attenuate waves as well as or better than breakwaters and other artificial structures meant for coastal defense.
  • When corals are stressed by changes in environmental factors, such as temperature, light, or nutrition, coral bleaching occurs. The symbiotic algae dwelling in the coral's tissue are expelled, causing the tissue to turn white or pale.

Fisheries In Coral Reef Ecosystems

Deep-sea corals, like their warm-water counterparts, are made up of small creatures that form a common skeleton that can take on a variety of shapes and hues.

  • The coral reef fisheries of Southeast Asia alone generate $2.4 billion in annual revenue from seafood.
  • Healthy coral reefs thrive and improve the quality of water. Marine plants, animals, and organisms operate as filters, capturing dirt and thereby cleaning the environment.
  • As a result, coral reefs in places with greater currents tend to grow larger as wave patterns provide food to the ecosystem.
  • Coral reefs are a crucial mating environment for fish and other living creatures due to their calm, surrounding waters.
  • These safe havens provide a haven for eggs and protect them from predators.
  • Coral reefs are also crucial nurseries for marine life, such as dugongs, due to the availability of seagrass.
  • Each year, almost six million tons of fish are harvested from coral reefs. Well-managed reefs produce an average of 15 t (13607.8 kg) of food particles every 0.4 sq mi (1 sq km) per year.


Coral reefs are some of the world's most significant ecosystems

Biodiversity Of Coral Reef Ecosystems

Coral reefs grow at depths of less than 82 ft (25 m) and require water that is between 60-84 F (15.6-28.9 C).

  • Clearwater allows more sunlight to reach the reefs, allowing them to grow quicker.
  • Coral thrives in shallow water because it needs sunshine to flourish. As a result, coral reefs that are deeper than 45 ft (13.7 m) are uncommon. Additionally, they favor tropical oceans since the water is warmer and cleaner.
  • These are little animals, yet they include algae, which is a type of plant. The algae provide energy for the reef by transforming the sun's energy into energy for the reef.
  • Coral polyps produce hard calcium carbonate, which forms reefs over thousands of years.
  • Fish, seagulls, shrimps, crabs, starfish, sea urchins, and sea stars are just a few of the marine species that live on reefs.
  • The excess and variety of hiding spots in coral reefs are the most vital agent contributing to the species' huge variety and biomass.
  • Algae can sometimes outnumber coral in terms of available space. The algae can then suffocate the coral by reducing the amount of oxygen accessible to it.
  • Sponges are necessary for the coral reef system to function properly.
  • Sea urchins, in particular, can play an important role in preventing algae from overrunning reefs.
  • Seabird species, some of which are endangered, rely on coral reef systems for their home. Each seabird species has its nesting spot on the atoll.
  • The largest atoll in the Northwestern Hawaiian Islands is the French Frigate Shoals.

Restoration Of Coral Reef Ecosystems

Because of catastrophic reef die-offs around the world, coral reef restoration has gained traction in recent decades. In the last three decades, half of the world's coral reefs are considered to have died.

  • Coral reefs are disappearing at a frightening rate. It is believed that we have already lost 10% of the world's reefs, and scientists predict that much of the world's oceans coral reefs will be gone in the next 50 years.
  • Algal invasion is a constant threat to reefs. Overfishing and an abundance of nutrients from onshore sources can allow algae to outcompete and kill coral.
  • Sewage or chemical fertilizer runoff can result in higher nutrient levels.
  • Pollution, sewage, erosion, reckless fishing, poor tourism practices, and global warming are all examples of human activities that cause damage.
  • Fish nurseries, biodiversity, coastal development, and natural beauty are all threatened by the destruction of global reefs.
  • In tropical regions, restoring reefs is much less expensive than erecting artificial breakwaters. Without the top meter of reefs, expected flooding damages would double, and costs from frequent storms would triple.
  • Gene therapy or naturally-occurring heat-tolerant forms of coral symbioses may make it feasible to grow corals that are more resistant to climate change and other hazards, making them a viable option for coral restoration.
  • Coral aquaculture, often called coral farming or coral gardening, is proving to be a promising strategy for repairing coral reefs.
  • Providing substrate to allow more coral to find a home is a common way to increase the size and number of coral reefs.
  • Discarded automobile tires, scuttled ships, subway carriages, and formed concrete, such as reef balls, are examples of substrate materials.
Written By
Shagun Dhanuka

<p>With a Degree in Business Administration, Shagun is an avid writer with a passion for food, fashion, and travel, which she explores on her blog. Her love of literature has led her to become a member of a literary society, where she contributes to promoting literary festivals in her role as head of marketing for her college. Shagun also pursues learning the Spanish language in her free time.</p>

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