Sadakichi Hartmann’s five-line lyric “Tanka 3” addresses the moon as if it were a drowsy, changeable person who has left the sky for the sea. The opening is not a statement but a long vocative picture: “Moon, somnolent, white, / Mirrored in a waveless sea.” Only after this moon has been named as a pale figure held in still water does the speaker ask the question that drives the poem: what capricious impulse made it flee heaven and take up life below? The central idea is less about astronomy than about perception. A reflection is so vivid that the speaker converts it into a story of will, mood, and flight.
The form announced in the title is a tanka, a compressed five-line verse. The poem keeps that tight shape while folding in English rhyme. The long-i sound of “white” returns in “night,” and “sea” returns at the end of the fourth and fifth lines, with “flee” held between them. That sonic patterning acts as its own mirror: sounds come back changed, just as the moon seems to come back as a watery double. The first line’s rhythm hovers around the polysyllabic “somnolent,” placed between two emphatic monosyllables, “Moon” and “white.” The effect is sleepy, suspended, as though the moon itself is not fully awake. The second line smooths out into “waveless sea,” where the word “waveless” explains the image: only completely still water can hold such an unbroken reflection.
The word choices keep the poem poised at a threshold. “Somnolent” belongs to sleep, while “dawnlit” belongs to waking, and the space between them is precisely where the poem lives. The moon is pale, the night is moody, the sea is flat and brightening. Rather than saying that the moon is copied in the water, the speaker says “Urged thee from heaven to flee / And live in the dawnlit sea.” The verb “urged” implies persuasion, not force; the moon becomes a being with choices. “Fickle” is the emotional hinge. It accuses the moon of inconstancy, yet it also suggests that the night’s mood is unstable and that the speaker is half-projecting that instability onto the scene. The archaic “thee” adds an intimate formality, as if the speaker were teasing a mythic figure rather than reporting a fact.
What makes the poem significant is the way its tiny frame holds a genuine ambiguity. The question never receives an answer. The final question mark leaves the moon suspended between heaven and sea, night and morning, constancy and change. The speaker has seen a reflection and chosen to read it as escape, as a second life in the water. That choice turns a calm natural mirror into a small psychological drama. Hartmann’s poem does not need to explain the trick; it simply lets the reader feel how easily the eye can blur into imagination. The moon remains both where it belongs and somewhere it cannot be, and the poem is the lingering look at that impossible double.