Hawaii Enlists Urchins to Help Corals Resist Algae Invasion

In Hawaii's Kāne'ohe Bay, an invasive algae introduced by a scientist in the 1970s was still wreaking havoc for coral reefs. After attempting human-driven solutions to rid the area of the species, scientists have instead found success by unleashing urchins that can eat double their body weight in algae per day.

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