Did you know that there are jellyfish that are technically immortal? There are. While this is technically old news (try two months) there has been an alarming lack of public knowledge of this phenomenon.
Scientists have been puzzled for decades by a jellyfish population boom, only to discover that certain jellyfish do not die naturally. Unlike most jellyfish, who go from planulae->polyp->polyp colony->jellyfish->death, the creatively named Immortal Jellyfish can revert back to the polyp colony, restarting its life and going on to create thousands of new genetically identical jellyfish, who will continue this cycle.
Any recent creation of militia groups to combat our future Jellyfish Overlords has not been reported.