Dave Bonta's three short lines read almost like a caption. The title, "Inspirational poster," sets the scene: the kind of glossy picture hung in workplaces, often showing a calm sea, meant to motivate tired people. The poem says that this is "how we picture the sea" when we are "at the office." The sea becomes something flattened and framed, a decoration rather than a real place with wind, salt and noise.
The last line carries the feeling. "Where we sat and sat" repeats the verb, and the repetition makes time drag. It suggests long hours, stillness, and a kind of quiet boredom. The speaker uses "we," so this seems a shared experience rather than a private complaint.
The mood is dry, wistful and gently ironic. Nothing is shouted, but there is a sense of longing for something larger than a desk, and a small sadness that all we have of the ocean, in that setting, is a picture of it.