Answer:
This line from the poem Tattoo, by Gregg Shapiro contains an example of a poetic device known as metaphor or simile.
Step-by-step explanation:
The speaker compares themselves with continents, worlds that are apart and the metaphor is a literary device that refers to a meaning or identity ascribed to one subject by way of another. In a metaphor, one subject is implied to be another so as to draw a comparison between their similarities and shared traits. In this case, the speaker compares themselves with worlds apart to express the differences, the distance between the two subjects.