The Seadrop Pendant

After moving from the big city of Toronto, Ontario, to the tiny village of Peggy’s Cove, Nova Scotia, Taryn Noble expected nothing except a long, boring summer ahead.
But that was before she received a mysterious pendant for her 14th birthday. That was before those strange creatures started chasing Taryn, her blind little sister Kaileigh, and her new neighbour Malcolm McKenna. That was before she let two total strangers pull her into a world unlike anything she’d ever imagined.
In the magical, underwater world of Marinesia, Taryn, Kaileigh and Malcolm are quickly befriended by a clan of merfolk. It is through them that the three children learn that they are the only ones who can locate three Marinesian Artifacts that are needed to permanently seal the rift in the Barrier between Marinesia and Earth, and protect them from the evil sea serpent Leviathan, and his legions of bloodthirsty Drakken.
Time is running out. The Barrier between Marinesia and Earth is weakening, and if Leviathan manages to collect all three Artifacts, that Barrier will be blasted wide open – resulting in a cataclysmic event that will ultimately wipe out all life on both worlds.