Scientists are using sound speakers in a bid to save the Great Barrier Reef 1575352434-Blue-green damselfish (credit Isla Keesje Davidson, University of Bristol)

4:53pm, Dec 3, 2019

1575352434-Blue-green damselfish (credit Isla Keesje Davidson, University of Bristol)

Cait Kelly Reporter

1575352434-Blue-green damselfish (credit Isla Keesje Davidson, University of Bristol)

1575352434-Blue-green damselfish (credit Isla Keesje Davidson, University of Bristol)

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