Atlantia

Rio has long dreamed of living a brief, yet free, life in the mysterious world Above but her hopes are dashed when her sister, Bay, makes an unexpected choice and Rio is stranded forever in the underwater city of Atlantia.

As Rio struggles with grief and disappointment, she resolves to find her sister again in the full knowledge that doing so could kill her. An unlikely ally, a dangerous secret and voices from the past could make Rio's dream a reality but can she navigate the insidious web of intrigue and corruption that is emerging all around her?

This engaging, dystopian fantasy is both entertaining and thought-provoking, raising questions about environmental responsibility and the nature of humanity.