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The premise of this slow-moving novella is haunting - the babies of pregnant women thrown overboard slave ships are nurtured by the ocean and grow to become a community of mermaid-ish folks, one of whom is designated at all times to carry the collective history and memory of the people so that all need not constantly bear the pain. Plenty to ponder on, but also, this is just a very cool take on mermaid life - very lgbtq friendly.