A suspenseful sci-fi escapade plucks two children out of the ocean for a thrilling adventure. Thirteen-year-old Aluna has lived her entire life under the ocean with the Coral Kampii in the City of Shifting Tides. But after centuries spent hidden from the Above World, her colony's survival is at risk. The Kampii's breathing necklaces are failing, but the elders are unwilling to venture above water to seek answers. Only headstrong Aluna and her friend...