Book excerpt: Trouble the Waters gathers the tidal force of bestselling, renowned writers from Lagos to New Orleans, Memphis to Copenhagen, Northern Ireland and London, offering extraordinary speculative fiction tales of ancient waters in all its myriad forms. Meet techno savvy water spirits, bayou saints and sirens, robots and river rootwomen, a pod of joyful space whales, and a castle of water-born terrors and mysteries. Including work by Nalo Hopkinson, Jaquira Diaz, Andrea Hairston, Linda D. Addison, Rion Amilcar Scott, Marie Vibbert, Maurice Broaddus, and other breakout beautiful voices, these stories and poems celebrate the most vital of elemental forces, water.