The is the book trailer for Lost Voices, the book from this post:

http://flippinyourfins.tumblr.com/post/7258301777/lost-voices-is-one-of-many-mermaid-books-being

This is from the book jacket

Fourteen-year-old Luce has had a tough life, but she reaches the depths of despair when she is assaulted and left on the cliffs outside of her grim, gray Alaskan fishing village. She expects to die when she tumbles into the icy waves below, but instead undergoes an astonishing transformation and becomes a mermaid. 

A tribe of mermaids finds Luce and welcomes her in—all of them, like her, lost girls who surrendered their humanity in the darkest moments of their lives. Luce is thrilled with her new life until she discovers the catch: the mermaids feel an uncontrollable desire to drown seafarers, using their enchanted voices to lure ships into the rocks. Luce’s own remarkable singing talent makes her important to the tribe—she may even have a shot at becoming their queen. However, her struggle to retain her humanity puts her at odds with her new friends. Will Luce be pressured into committing mass murder?

The first book in a trilogy, Lost Voices is a captivating and wildly original tale about finding a voice, the healing power of friendship, and the strength it takes to forgive.