Al Mayadeen English

  • Ar
  • Es
  • x
Al Mayadeen English

Slogan

  • News
    • Politics
    • Economy
    • Sports
    • Arts&Culture
    • Health
    • Miscellaneous
    • Technology
    • Environment
  • Articles
    • Opinion
    • Analysis
    • Blog
    • Features
  • Videos
    • NewsFeed
    • Video Features
    • Explainers
    • TV
    • Digital Series
  • Infographs
  • In Pictures
  • • LIVE
News
  • Politics
  • Economy
  • Sports
  • Arts&Culture
  • Health
  • Miscellaneous
  • Technology
  • Environment
Articles
  • Opinion
  • Analysis
  • Blog
  • Features
Videos
  • NewsFeed
  • Video Features
  • Explainers
  • TV
  • Digital Series
Infographs
In Pictures
  • Africa
  • Asia
  • Asia-Pacific
  • Europe
  • Latin America
  • MENA
  • Palestine
  • US & Canada
BREAKING
Al Mayadeen's correspondent: Two were martyred in an initial toll of the Israeli drone strike that targeted the al-Asira neighborhood in the city of Baalbek, eastern Lebanon
Al Mayadeen's correspondent: An Israeli drone strike targeted the al-Asira neighborhood east of Baalbek, eastern Lebanon
Sheikh Naim Qassem to the pager attack survivors: You are the greatest resistance. Know that 'Israel' will fall because it embodies aggression, crime, and occupation; victory is truly yours
Sheikh Qassem to the pager attack survivors: The value of what you are doing despite your wounds is immense, and here you are, treading the path of the Master of Nation's Martyrs and the leaders
Sheikh Qassem to the pager attack survivors: You are moving forward with insight deeper than sight itself. The enemy sought to eliminate your role in the battle, yet you remain steadfast and continue the fight
Hezbollah Secretary-General Sheikh Naim Qassem to the pager attack survivors one year later: You are healing from your wounds and rising above them. You have successfully passed the test
Palestinian media: Reports of stabbing operation in occupied al-Quds.
Israeli media: Sirens blare in Arava in South, near Ramon Airport.
Egyptian PM Mostafa Madbouli: Egypt is targeted in plans to redraw regional map
AEOI Chief Mohammad Eslami: Our presence in IAEA General Council and fact-checking helped in preventing unilateral rhetoric that aims to portray Iran as an unregulated country

Planet Earth Loses Half Its Coral Reefs since 1950

  • By Al Mayadeen
  • Source: Agencies
  • 20 Sep 2021 09:35
4 Min Read

Dramatic declines in coral reef cover, biodiversity, and fish abundance recorded, a new study finds.

  • x
  • Half of our planet's coral reefs is lost
    Half our planet's coral reefs are lost

It has always been known that reefs are in danger, but a new study published in the journal One Earth assessed the size of coral losses around the world. The study reveals that half of the coral reefs have been lost since the 1950s, and scientists believe this is caused by climate change, overfishing, and pollution. These factors are wiping out these already vulnerable fragile ecosystems and putting communities and livelihoods at risk. As a matter of fact, the study goes as far as to underscore the rapid pace of global coral collapse.

“Coral reefs have been in decline worldwide—I think that's pretty commonly accepted,” says Tyler Eddy, a research scientist at the Memorial University of Newfoundland who co-authored the study. “We didn't necessarily know the magnitude of how much, when we looked on a global scale, that reefs had declined.”

What are coral reefs?

Related News

Climate change caused 16,500 deaths in European cities in Summer 2025

Cutting air pollution could save 30,000 US lives by 2030

Coral reefs are biodiversity hubs that house fishes, protect coastal communities, and generate billions of dollars for fisheries and tourism. According to biologist Mary Hagedorn, one of the reasons why corals are dying is that they are super sensitive to changes in water temperature and acidity, both being by-products of climate change. 

The irreversible process leading to coral reefs’ death

“Corals have skeletons, which makes them seem like rocks,” says Hagedorn, but they are animals with symbiotic partners. Coral polyps rely on colorful algae, called zooxanthellae, which live in their tissue and produce food the corals need for survival. When the polyps are stressed by changes in light, water temperature, or acidity, they break that symbiotic relationship and expel the algae in a process called bleaching. Corals have a short window to regain their symbiotic algae, but if corals are stressed for too long, their death is irreversible. “There is not a reef on earth that has not been touched by some aspect of this global and local threat,” says Hagedorn.

Coral reefs dying and biodiversity dropping

In addition to the fact that half of living corals have died since the 1950s, researchers have discovered that biodiversity associated with coral reefs has dropped by 63%. Healthy reefs support thousands of different corals, fish, and marine mammals, but the reefs that undergo bleaching lose their ability to support as many species. 

It was also found that catches of coral reef fishes peaked in 2002 and have been declining since then, despite increased fishing efforts. The study also showed that the loss of coral species wasn’t equal across reefs, with certain corals proving to be more sensitive than others, leading biologists to worry that some vulnerable coral species will be lost before documenting or preserving them.

How does the loss of coral reefs affect humans?

The connection between human communities and reefs is also discussed in the study. Losing ecosystems is tragic, but what does such a loss mean for people? “Coral reefs play this really important function in providing indigenous and local communities with vital micronutrients, and if they lost them, it could lead to severe implications,” ecologist Christina Hicks says.

What to do?

“There are lots of strategies for saving coral reefs and for bringing down carbon emissions, and people often debate about what's most effective,” says Hicks. “What this study says is that it's even more vital that we act now, and that we act in all directions.”

  • Restoring corals
  • coral reefs
  • corals
  • Climate change
  • Climate crisis
STOP THE HEAT: A Climate Change Coverage

STOP THE HEAT: A Climate Change Coverage

Most Read

Why is Choose Love using a firm with British and US intelligence connections to run a pro-Palestine musical event? (Al Mayadeen English; Illustrated by Batoul Chamas)

Together for Palestine: Troubling questions about the organisers of this huge event

  • Opinion
  • 17 Sep 2025
Uprising against Volker Turk at the Human Rights Council over Gaza.

Uprising against Volker Turk at the Human Rights Council over Gaza

  • Politics
  • 12 Sep 2025
A screengrab from the ad played on Fox News. (X Screengrab)

Fox airs ad warning Trump not to let Netanyahu 'play' him on Gaza

  • US & Canada
  • 11 Sep 2025
Lapid: Egypt’s Arab Force plan a 'severe blow' to normalization

Lapid: Egypt’s Arab Force plan a 'severe blow' to normalization

  • Palestine
  • 14 Sep 2025

Coverage

All
The Ummah's Martyrs

Read Next

All
A Hezbollah supporter who lost his sight in a pager attack carried out by "Israel" on Sept. 17, 2024, covers his eyes with a red headband inscribed with the name "Hussein" during Ashoura, July 6, 2025 (AP)
Politics

'We Have Recovered': Lebanon marks 1st anniversary of Pager Attack

The Arab neighborhood of El Za'im, on the outskirts of east Occupied Al-Quds in the West Bank, near where Israeli government says housing units will be built as part of the E1 settlement project, Thursday, August 21, 2025. (AP Photo/Ohad Zwigenberg)
Palestine

'Israel’s' deliberate policies drive West Bank economy toward collapse

Ben & Jerry's ice cream shop, Wednesday, Feb. 26, 2025, in Cambridge, Mass. (AP Photo/Charles Krupa)
Politics

Ben & Jerry’s co-founder resigns over parent company curbing activism

Trump’s approval rating falls to new low in second term: Poll
US & Canada

Trump’s approval rating falls to new low in second term: Poll

Al Mayadeen English

Al Mayadeen is an Arab Independent Media Satellite Channel.

All Rights Reserved

  • x
  • Privacy Policy
  • About Us
  • Contact Us
  • Authors
Android
iOS