What is the significance of coral protection and breeding?

Posted by 速水ゆきえ on

Hello everyone!

Based in Okinawa, econawa is surrounded by the sea, and corals are very close to our daily lives.
Global warming is accelerating, and the UNESCO Oceanographic Commission says that about 90% of corals will die out by 2030.
In the past 100 years, the average global temperature has risen by about 0.73°C, but it is said that it will rise by 1.5°C around 2030, and it is said that corals will die out due to this rise.


I'm going to talk about corals that are in danger of extinction.

The other day, I visited sea seed , a limited company in Okinawa.
A company that cultivates corals in Okinawa and transplants and plants them to the sea.

Mr. Koji Kinjo, who loved nature, gave up his restaurant business at the time to protect the rich sea and protect the next generation of corals, and devoted his life to coral protection, cultivation, and research! We started coral farming in 2002 , and in 2010 , it was reproduced based on a true story in the movie "Tida Kankan Sea, Coral and Small Miracle" starring Takashi Okamura of Ninety-Nine.

Bleaching event that causes coral reefs to become extinct


The coral bleaching phenomenon is water temperature rise is considered to be one of the causes, and if the seawater temperature continues to exceed 30 ° C , the zooxanthellae that live symbiotically within the body of the coral will be released and will begin to decrease. Even whitened coral that has lost algae can survive if the water temperature returns to a comfortable level and the algae return to its body, but most of it dies.

In September 2022 , the Ministry of the Environment conducted a survey of 31 sites in Sekisei Lagoon, the largest coral reef area in Japan off the coast of Ishigaki Island, and found that the average bleaching rate at all sites was 92.8 . % was announced.

Why are corals important?


Role of coral


・Absorbs carbon dioxide, produces oxygen, cleans the sea, and regulates the concentration of CO2
・As a spawning ground for fish and other marine life
・Coral softens high waves caused by typhoons and tsunamis caused by earthquakes like a breakwater.
Tourism resources (attraction of environmental tourists to see beautiful corals)


Causes of coral death


・Rise in seawater temperature (temperature rises due to greenhouse gas (carbon dioxide))
・A large number of crown-of-thorns starfish that eat coral
・Stress caused by environmental changes in water quality
・Human reasons (sunscreen, damage from stepping on, contaminated wastewater, outflow of garbage)
・Coral damage due to typhoons
(Since no typhoon comes, the seawater is not stirred and the seawater temperature rises.)
・Wastewater runoff from factories ・Use of chemical fertilizers and pesticides causes soil to flow into rivers and into the sea.
・Disposable plastic waste that ends up in the ocean ・Microplastics


What if the coral dies?


・The number of fish dependent on corals will decrease in large numbers. ・The ecosystem of marine organisms will collapse.
・As carbon dioxide increases and the seawater temperature rises, the temperature also rises,
Terrestrial ecosystems will also be damaged ・Global warming will accelerate ・Tourism and fisheries will be affected
・The role of the breakwater is lost, and disasters become more serious.
・The concentration balance of CO2 collapses and water pollution spreads further.


How to protect coral from dying


・Switch to eco-friendly sunscreens ・Avoid touching or stepping on corals when snorkeling or diving ・Do not anchor boats on coral reefs Prevent spills Switch to eco-friendly detergents Participate in coral conservation activities and share information Do not use chemical pesticides or fertilizers Try to save water (increase in water usage leads to sewage)
・Clean up the beach ・Recycle appropriately and switch to environmentally friendly products



Coral is an essential existence that protects the earth and us.
Coral is not only protected, but also cultivated and planted
The next page introduces coral farming by sea seed Co., Ltd.




econawa donates part of its sales to coral farming and planting


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