The Secret of Roan Inish (1994)

This is my absolute favorite movie and has been ever since I was a little girl. My mother actually introduced me to this movie and since then I have become addicted to all things mythological (I probably would have gotten into it anyways, but this sped up the process). 

It's a story about a girl who goes to live with her grandparents for a while because her father is too busy with work to care for her. While with her grandparents, she visits an island her family used to live on. This is also the island where her younger brother was taken away by the sea. She snoops around the island and catches glimpses of a small boy she suspects to be her brother. As it turns out, selkies have taken him away. So the girl, with the help of her cousin, begin to make the abandoned houses on the island habitable again so that they can move back, thereby getting the girl's brother back from the sea. 

This film is subtle, yet superbly effective in giving you that evanescent, magical feeling. So many movies try to capture that evasive 'something else' but end up being fake and cheesy but this one makes the cut. It's suitable for all ages and is a definite must experience. The soundtrack isnt bad either.