Three trained killers are on the loose, and they are assumed to be armed and dangerous. They're also dolphins.

The Ukrainian Navy is currently without three of its best and brightest after three dolphins trained to locate underwater mines and kill enemy divers went missing in the Black Sea. The rogue dolphins reportedly swam away from trainers, and they'll probably stand out—they have knives or pistols attached to their heads. 

The practice of training dolphins to kill goes back some years. According to the Bulletin of Atomic Scientists, the trainers acquired about 70 dolphins from the Soviet military following the fall of the Soviet Union.

[via The Atlantic]