Catastropic displacement of layers of the univers in the past or in the future is mentioned. Among variants (sometimes combined):
the sky fell on the earth; the earth (the underworld) and the sky interchanged their positions; the earth turned upside down; the layers of the universe collapsed in one after another; they will change their place during the future cataclysm
During the flood birds or animals escape to some place (mountain, tree, boat, sky). Tips of their tails or other body parts get covered with water or foam and acquire their present color and form
Inhabitans of the Middle World are (partly) destroyed (or will be destoyed) once by fire or draught, another time by a flood or the world is destroyed with a flood of fire or boiling water
Fruits and shoots of different cultivated plants grow on the branches of one tree (on one vine) or certain plant has a tree form that is alien to it in nature
(Animal-)people try to fell a tree that contains water and fish or has cultivated plants on its branches. The notch disappears and the tree becomes intact
Heroes avenge the murder or captivity of the male relatives: (grand)father, uncles, or the elder relatives in general, the loss of the males being the most traumatic
Person gets into the belly of water being or into the belly of giant creature which appearance and living place remain vague. He kills the monster from the inside and/or returns to earth by himself (i.e. not extracted by other people)