The Atalantium Trilogy Series by Marie Morin

When Alexis Stanhope finds herself captive in a world not her own, filled with wonders both savage and beautiful, she knows she must find a way to escape, to return to her own world and her own people, to avenge her father's murder. And yet, from the moment she first meets the Guardian, she finds it impossible to resist the temptation to yield to him; heart, body and soul... moreWhen Alexis Stanhope finds herself captive in a world not her own, filled with wonders both savage and beautiful, she knows she must find a way to escape, to return to her own world and her own people, to avenge her father's murder. And yet, from the moment she first meets the Guardian, she finds it impossible to resist the temptation to yield to him; heart, body and soul. In yielding, can she conquer the heart of the mightiest warrior the world has ever seen? Or will she lose her heart, only to learn that even love can not bridge the gap for two beings from such different worlds? less

Stephanie 'Stevie' Reynold's fascination with the sea has led to important discoveries in her field. However, neither her knowledge or experience has quite prepared her for her newest discovery--Adonis.

Claire Holiday had always tried to hide her 'gift' because it made her different--but she'd never dreamed it could cost her her life, that she'd be abducted by strange beings from the sea because they planned to exploit her gift to the fullest and use it to destroy Atlantis.