Autonomous robosub hunts starfish with poison-tipped needles
 

Crown-of-thorns starfish (COTS) are voracious coral consumers with a propensity for population explosions, which makes them very real threats to the world's coral reefs. And while they're typically held in check by fish higher in the food chain, ov...

http://www.engadget.com/2015/09/03/a...&ncid=rss_semi