you wander through the capital wasteland and you come across a old pre-war nuka cola factory. You enter and clear out the protections. But you enter that basement and it's odd. It's flooded with glowing blue nuka-quantum and then you see it. Some sort of mirelurk glowing a bright blue from the nuka-quantum flooded basement. The crab-like creature stares at you and starts charging at you. This isn't a simple mirelurk. This is a nuka-lurk enhanced by the radiation of the nuka-quantum.