A billion-dollar dredging project that wrapped up in 2015 killed off more than half of the coral population in the Port of Miami, finds a new study, that estimated that over half a million corals were killed in the two years following the Port Miami Deep Dredge project.

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A billion-dollar dredging project that wrapped up in 2015 killed off more than half of the coral population in the Port of Miami, finds a new study, that estimated that over half a million corals were killed in the two years following the Port Miami Deep Dredge project.