Water Dancer by Jenifer Levin

Using the competitive world of long-distance swimming as a springboard, this intriguing novel probes the nature of strength, intimacy, and commitment. Water Dancer is the story of a world-class swimming instructor who returns to swimming after a self-imposed hiatus due to the death of his only child.

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The main lesbian character is Dorey, a young marathon swimmer who is determined to swim the dangerous waters of San Antonio Straits.