La Grande Barrière de Corail, le plus grand système de récifs coralliens au monde, est confrontée à des menaces importantes liées au changement climatique, à la pollution et à la surpêche. L'augmentation de la température de la mer provoque le blanchiment des coraux, qui perdent leurs couleurs vives et leurs algues symbiotiques essentielles. Des efforts de conservation sont en cours pour protéger et restaurer cette merveille naturelle, qui abrite des milliers d'espèces marines.
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