The Sapphire Road — Tara Maya

Isla Ackerman, a daring teen raised on a high-tech seastead, dreams of adventure beyond her oceanic home. But when a storm leaves her stranded aboard The Cetacean—a revolutionary submarine disguised as a blue whale—her world is turned upside down.  Captained by the brilliant but unhinged Elias Lamar and his enigmatic son, Corwin, The Cetacean is more than a vessel—it is committed to following the migration path of a pod of magnificent and mysterious blue whales. But it's also driven by a dark purpose.With danger mounting and loyalties tested, Isla must decide where she stands—and if she trust Corwin.