What are two real-life examples of what has happened when sharks are removed from an ecosystem?

Answer
  • One study in the U.S. indicates that the elimination of sharks resulted in the destruction of the shellfish industry in waters off the mid-Atlantic states of the United States, due to the unchecked population growth of cow-nose rays, whose mainstay is scallops.

  • Other studies in Belize have shown reef systems falling into extreme decline when the sharks have been over-fished, destroying an entire ecosystem. The knock-on effects are frightening: the spike in grouper population (thanks to the elimination of sharks) resulted in a decimation of the parrotfish population, who could no longer perform their important role: keeping the coral algae-free.

  • Studies are already indicating that regional elimination of sharks can cause disastrous effects including the collapse of fisheries and the death of coral reefs.

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What are two real-life examples of what has happened when sharks are removed from an ecosystem?
What are two real-life examples of what has happened when sharks are removed from an ecosystem?
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