If this thing actually works as well as they say it will, it would be pretty cool and instrumental in helping to fight the crown of thorns starfish. Now on the other hand, not so sure how I feel about what amounts to a drone with built-in autonomous target recognition with a hunt and kill function!
http://www.advancedaquarist.com/blog/the-cots-terminator
http://www.advancedaquarist.com/blog/the-cots-terminator