Would you rather dance beneath the waves or hide your smuggled magic there? Welcome to a world of sparkling adult fantasy and science fiction stories edited by Stephanie Burgis and Tiffany Trent and featuring underwater ballrooms of one sort or another, from a 1920s ballroom to a Martian hotel to a grand rock ’n’ roll ball held in the heart of Faery itself. Stories in this anthology: Ysabeau S. Wilce, “The Queen of Life” Y.S. Lee, “Twelve Sisters” Iona Datt Sharma, “Penhallow Amid Passing Things” Tiffany Trent, “Mermaids, Singing” Jenny Moss, “A Brand New Thing” Cassandra Khaw, “Four Revelations from the Rusalka Ball” Stephanie Burgis, “Spellswept” Laura Anne Gilman, “The River Always Wins” Shveta Thakrar, “The Amethyst Deceiver” Patrick Samphire, “A Spy in the Deep”