The second novel from Nicola Penfold, following the success of 'Where the World Turns Wild'. A thrilling and thought-provoking adventure from a fresh new voice in children's fiction. In a near future where a series of environmental disasters has left much of the country underwater, Pearl lives on a floating oyster farm with her father and younger sister, Clover. Following her mum's death several years earlier, Pearl refuses to set foot on land, believing her illness was caused by the poisons in the ground. Then Nat comes to spend the summer at the sea farm while his scientist mum conducts some experiments and brings with him a secret...