Undersea meadows in peril

By MacGregor Campbell A FOOTBALL pitch-sized chunk of undersea meadow is vanishing every 30 minutes, according to the first global assessment of the problem. Seagrass meadows are found in shallow coastal waters around the world. Along with coral reefs, mangrove forests and salt-marshes, they play an important role in nutrient cycling, while also providing a refuge for crustaceans, juvenile fish and endangered species such as dugongs, manatees and sea turtles. Although marine ecologists have been measuring local seagrass loss for decades,
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