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海參：清潔海洋的無名英雄－ BBC News 中文
海參是地球上最為人低估的生物之一，它們生活在海洋中，靠過濾沙中雜質為食，對清除海洋污染物扮演重要角色。在馬達加斯加沿海，生態保育組織協助當地居民設立海參養殖場，一方面改善居民生活，一方面也保護野生海參免於受到過度捕撈。
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