Home from the Sea (Elemental Masters Series #8)

They came from the sea…
 
For as long as she could remember, Mari Prothero had seen things—tiny manlike creatures that were mischievous and wore only seaweed, and beings that seemed to be made of water. Mari had grown up in a tiny Welsh fishing village where she lived alone with her father, Daffyd, a master fisherman—her mother and brother having drowned when she was a child.
 
On the morning of her eighteenth birthday, her father finally told her the great secret …