A close up of a large crab with a very long claw

Because of the discharge of the sea，Many marine organisms mutate，After they have had enough fighting in the sea, they can actually come to land and bite humans，Human emergency internal withdrawal，Abandon coastal cities，Lock small survival range came to mainland cities。But inland cities are also due to changes in the ecological environment，Nuclear contamination of rainwater erosion，Some scorpions，Ant centipedes become huge。