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Hawaii News

Algae-eating sea urchins help keep Kaneohe Bay reef clean

Nina Wu
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Video courtesy Brian Nielson / State of Hawaii Division of Aquatic Resources
Native sea urchins prove effective in a large-scale study on managing invasive algae.
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COURTESY BRIAN NEILSON / HAWAII STATE DEPARTMENT OF AQUATIC RESOURCES

A recently published study has found that the manual removal of the algae, combined with the outplanting of these native sea urchins, was a more effective way to keep them off the reef for good.