Ingo Series by Helen Dunmore

I wish I was away in Ingo, Far across the sea, Sailing over the deepest waters, Where love nor care can trouble me...Sapphire's father mysteriously vanishes into the waves off the Cornwall coast where her family has always lived. She misses him terribly, and she longs to hear his spellbinding tales about the Mer, who live in the underwater kingdom of Ingo. Perhaps that is why she imagines herself being pulled like a magnet toward the sea... moreI wish I was away in Ingo, Far across the sea, Sailing over the deepest waters, Where love nor care can trouble me...Sapphire's father mysteriously vanishes into the waves off the Cornwall coast where her family has always lived. She misses him terribly, and she longs to hear his spellbinding tales about the Mer, who live in the underwater kingdom of Ingo. Perhaps that is why she imagines herself being pulled like a magnet toward the sea. But when her brother, Conor, starts disappearing for hours on end, Sapphy starts to believe she might not be the only one who hears the call of the ocean. less

I can't go back in the house. I'm restless, prickling all over. The wind hits me like slaps from huge invisible hands. But it's not the wind that worries me. It's something else, beyond the storm...Sapphire and her brother Conor can't forget their adventures in Ingo, the mysterious world beneath the sea. They long to see their Mer friends once more. But a crisis is brewing far below the ocean's surface, where Saldowr, the wisest of the Mer, guards the Tide Knot... moreI can't go back in the house. I'm restless, prickling all over. The wind hits me like slaps from huge invisible hands. But it's not the wind that worries me. It's something else, beyond the storm...Sapphire and her brother Conor can't forget their adventures in Ingo, the mysterious world beneath the sea. They long to see their Mer friends once more. But a crisis is brewing far below the ocean's surface, where Saldowr, the wisest of the Mer, guards the Tide Knot. And soon both Sapphire and Conor will be drawn into Ingo's troubled waters. less

The third spellbinding story about Sapphy and Conor's adventures in the powerful and dangerous underwater world of Ingo. A devastating flood has torn through the worlds of Air and Ingo, and now, deep in the ocean, a monster is stirring. Mer legend says that only those with dual blood -- half Mer, half human -- can overcome the Kraken... moreThe third spellbinding story about Sapphy and Conor's adventures in the powerful and dangerous underwater world of Ingo. A devastating flood has torn through the worlds of Air and Ingo, and now, deep in the ocean, a monster is stirring. Mer legend says that only those with dual blood -- half Mer, half human -- can overcome the Kraken. Sapphy must return to the Deep, with the help of her friend the whale, and face this terrifying creature -- and her brother Conor and Mer friend Faro will not let her go alone! less

The crossing of Ingo is an ancient and dangerous coming-of-age ritual: a journey to the bottom of the world. Sapphy and Conor have been called to take part, the first of human blood ever to make an attempt. But Ervys and his followers are determined to stop them: dead or alive. Helen Dunmore builds her classic, much-loved series up to a breathtaking finale.

In this companion novel to the Ingo series, myth and reality collide when Morveren, a young girl from a Cornish island, discovers a Mer boy, Malin, half-buried in the sand dunes. New conflicts erupt between the worlds of sea and air, and storm clouds of danger gather as Morveren and her twin sister, Jenna, struggle to protect Malin... moreIn this companion novel to the Ingo series, myth and reality collide when Morveren, a young girl from a Cornish island, discovers a Mer boy, Malin, half-buried in the sand dunes. New conflicts erupt between the worlds of sea and air, and storm clouds of danger gather as Morveren and her twin sister, Jenna, struggle to protect Malin. An enthralling battle of loyalties begins when Morveren and Jenna learn that even your closest friends can betray you, and that a tragic reality lies beneath their island’s legends. less