US military explores using sea life to spot threats

Well, mostly enough. The challenge is meeting DARPA’s requirements. Any resulting system will ideally send data to devices as far as 500 meters (1,640 feet) away, and should be smart enough to distinguish between different objects. It wouldn’t be very effective if enemies could see a transmitter bobbing on the water, or if it sounds the alarm for a passing dolphin. There could be many upsides if