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Japan lost 75% of biggest coral reef due to bleaching

Japan lost 75% of biggest coral reef due to bleaching A government study reveals Coral in the Sekisei lagoon in Okinawa has turned brown and is covered with algae.

Japan’s biggest coral reef has died by almost three-quarters, according to a report that blames its demise on rising sea temperatures caused by global warming.

The Japanese environment ministry said a phenomenon known as bleaching killed 70% of the Sekisei lagoon in Okinawa.

Bleaching occurs when unusually warm water causes coral to expel the algae living in their tissues, causing the coral to turn completely white. Unless water temperatures quickly return to normal, the coral eventually dies from lack of nutrition.

The plight of the reef, located in Japan’s southernmost reaches, has become “extremely serious” in recent years, according to the ministry, whose survey of 35 locations in the lagoon last November and December found that 70.1% percent of the coral had died.

The dead coral has now turned dark brown and is now covered with algae.
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