Warmer Seas: Corals are the whistle blowers of the sea

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The world’s coral reefs are in trouble. As the oceans get warmer, corals are stressed and eventually die. Coral scientist Tessa Hempson calls corals the “canary in the coal mine”. The little bird that used to be placed far down the mine shafts, because when it died you knew the oxygen in the mine would soon run out. A whistleblower who suffers long before we humans do.   

Reportage: Johan Candert
Photo: Johan Candert, Göran Ehlmé, Leif Eiranson
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