The scene described in John Cheever's "Goodbye, My Brother" captures a vivid moment at the sea, where the water is both vibrant and mysterious. The narrator observes his wife, Diana, and sister, Helen, as they swim, their heads appearing like dark gold amidst the waves. Their natural beauty and confidence are striking, and the imagery emphasizes their freedom and grace as they emerge from the ocean.

This moment serves as a reflection of the narrator's feelings towards his family and the contrasting emotions he experiences. While he admires the naked figures in the water, he may also be grappling with deeper complexities surrounding familial relationships and personal discontent. The description encapsulates a blend of admiration and introspection, highlighting the beauty of the scene against the backdrop of underlying tensions.