OET interlinear REV 16:20

uW Translation Notes:

Note 1 topic: figures-of-speech / explicit

καὶ πᾶσα νῆσος ἔφυγεν, καὶ ὄρη οὐχ εὑρέθησαν

and every island fled and /the/_mountains not /were/_found

John means implicitly that these things also happened as a result of the earthquake. You can provide this information in your translation if that would be helpful to your readers. UST models one way to do that.

Note 2 topic: figures-of-speech / personification

ἔφυγεν

fled

John is speaking of each island as if it were a living thing that fled. He means that the islands disappeared beneath the surface of the ocean. If it would be helpful in your language, you could state the meaning plainly. Alternate translation: “sank into the ocean”

Note 3 topic: figures-of-speech / idiom

ὄρη οὐχ εὑρέθησαν

/the/_mountains not /were/_found

Here the expression were not found means “could not be found” or “were not there.” Alternate translation: “there were no mountains anymore”