It's not a joke, in the '60s they considered Lazer Submarines but the technology wasn't scalable at that time, a lazer weapon usually would be backpack size. A

It's not a joke, in the '60s they considered Lazer Submarines but the technology wasn't scalable at that time, a lazer weapon usually would be backpack size. At the time the US Navy began developing a secret project which is Lazer Dolphins. The Soviet got wind of this and worried about the Lazer Arms Race Gap, so they begin to develop Lazer Sharks. Of course that isn't the end of the whole Lazer arms race, in modern times there have been efforts to use genetic technology to resurrect ancient organisms to mount Lazers upon. For example, China is developing Lazer Raptors currently, and Russia has announced several wonder weapons including a nuclear rocket engine ICBM, a submarine-sized fusion bomb drone torpedo, and Lazer Mammoths.