As we already discussed in "Symbols," the title has a lot to do with the heavy use of water imagery and symbolism in chronicling the narrator's journey toward self-discovery, which involves allowing some painful truths and memories of the past to come up to the "surface." Just to make absolutely sure the metaphor isn't lost on us, the narrator has her big epiphany about some memories she had suppressed while she's diving in a lake, at which she surfaces to deal with everything she's just unearthed in her own memories and psyche—see how that works?