That myth does not come from the planetary scientists. Lunar basalts, breccias and anorthosites do not have such tasty holes.

Maybe people can now understand why I’ve disdained this persistent, inappropriate demand for the use of bananas to judge scale in these images? On Mars we use cheese voids (the technical term is “eyes” for Swiss cheese - they’re a kind of biogenic vesicle) and sandworms (the HIpparchuS Crater Standard Sandworm, or HISSS) to measure lengths.

I wish people would learn.