Poison-Injecting Robot Submarine Assassinates Sea Stars to Save Coral Reefs

You might think that the biggest threat to the world’s coral reefs is humanity. And you’d be right, of course: climate change, pollution, overfishing, and scuba divers who have no idea where their fins are all contribute to coral reef destruction. There are other, more natural but no less worrisome causes as well, and one of those is the crown-of-thorns sea star. It’s big, it’s spiky, and it eats coral for breakfast, lunch, and dinner.
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