Most school assignments have a right answer. The one in this poem has none, and that is the point. "Design a container / for the sea" sounds like an art-class project until you think about it: the sea has no edges for a human hand to draw around. The poem takes a task that is impossible on its face and uses it to ask a bigger question. Can you accept the whole of something, including the parts you would rather leave out?
The poem is a single block of fifteen lines of free verse, with no rhyme and no regular beat. Its rhythm is that of a voice giving instructions, firm and a little stern, and the word that drives it is "must." It appears in "It must embrace," "you must must include," "Your container must hold," and "The tsunami must be," five times if you count the stammered double. That doubled "must must" is the most human moment in the poem. The calm instructor slips, and real insistence shows through.
The opening sets the scale with "each whale / and fleck of plankton," the largest creature and nearly the smallest. The verb "embrace" is surprising for a container. It suggests arms rather than glass, as though the thing you build should care about what it holds. Then the speaker predicts us: "Of course, you will think / of your favorite tropical fish." The sea we picture first is the postcard sea, with "rich coral canyons," "deep kelp forests," and "singing dolphins." These phrases flatter the ocean, and "singing" makes its animals sound almost like cartoon friends. The line break after "but" then holds the sentence in the air for a moment before it turns.
What follows is "the rest," and the sound hardens. "Great white sharks and red tides, / the deadly stinging jellyfish" is full of clipped, spiky consonants. The grammar matters too. Sharks sit in the same kind of list as otters and get no special drumroll. The sea does not rank its creatures into pleasant and unpleasant, and the poem refuses to either.
The longest sentence stretches across three lines: "every calm / and billow, every island and basin / and estuary and brackish backwater." The repeated "and" makes the syntax feel like something filling up, and the b-sounds of *billow*, *basin*, *brackish* and *backwater* give it a bubbling, lapping texture. The list moves from animals to places, and the places become less glamorous as it goes. A brackish backwater is murky and in-between, and nobody photographs it for a brochure. The poem insists on the overlooked as much as on the dangerous.
Then comes the shortest sentence, "Leave nothing out," which is a flat command. The tsunami arrives with a small delay: "The tsunami must be / there." The line break pushes "there" onto the next line, so the wave seems to land just after we expect it. The poem could end on that disaster, but it does not. It ends on "the pale blue impossible calms / after the storms have passed." The plural "calms" and the soft colour slow everything down. "Impossible" is deliberately double-edged. It can mean a stillness so beautiful it seems unreal, or one too delicate to capture in any container. Either way, the stillness gets its full weight because the tsunami came first. Calm also appeared earlier in the poem, in "every calm / and billow," so the ending feels like a return.
The poem never says what the container is, and that openness is its richest feature. Judging by the way it speaks of "embrace" and of holding "every" calm and billow, the container could stand for a poem, a memory, a mind, or a whole life, but the text leaves the choice to us. What it does say is that the common habit of keeping the pretty parts and quietly dropping the frightening ones produces a false picture. People do this when they describe a holiday, a place, a year, even themselves. The poem argues for a harder kind of honesty, and it is clear that nobody can fully succeed. A container for the sea cannot exist, but the poem suggests that the attempt, made without editing, is what the day's work really is.