Sea Crossing

"A Children of the Sea prequel" -- as stated on author's Web site. Disgraced schoolteacher Emma March books passage in steerage on a steamship from Liverpool to Canada to take a job as a servant. When the ship sinks, she is rescued by a seal -- and awakes to find herself on an island called Sanctuary. Conn ap Llyr, prince of the selkies, needs someone to school the wild and neglected young selkies staying at Sanctuary. So he sends his warden Griffith ap Powell to fetch a teacher...