Watch some lost crabs take over a subway train
It happened in Germany a few years ago, and more recently the same "crab breakout" occurred on a train in England as you can see from the video below. According to The Sun, the crabs were released by a passenger who was carrying a bag full of them that broke, letting its content populate the train. The video was shot by another passenger who was at the Gateshead metro station in Newcastle.
Here is the footage the passenger shot: