> Sea stars are the natural predators of the urchins, and with their disappearance, the urchins flourish and take down the kelp. No problem. We simply unleash

> Sea stars are the natural predators of the urchins, and with their disappearance, the urchins flourish and take down the kelp. No problem. We simply unleash wave after wave of Chinese needle snakes. They'll wipe out the urchins.