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.
Population explosions of these sea stars can devastate entire reefs, and it’s not unheard of to see 100,000 crown-of-thorns sea stars per square kilometer. There isn’t a lot that we can do to combat these infestations, because the sea stars can regenerate from absurd amounts of physical damage (they have to be almost entirely dismembered or completely buried under rocks), so humans have to go up to each and every sea star and inject them with poison 10 times over (!) because once isn’t enough.
Bring on the autonomous stabby poison-injecting robot submarines, please.