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Injured Coral Have Less 'Sex'

A colony of Antillogorgia elisabethae coral in the Bahamas suffers long-term effects after injury.

Great Barrier Reef

Australia's Great Barrier Reef — the world's largest coral reef ecosystem, chock-full of diverse marine life-- is also

in steep decline, with half of the reef vanishing in the past 27 years, according to new research.