Goodreads synopsis: When Lily Sanderson decided to remain Crown Princess Waterlily of the mermaid kingdom Thalassinia, she knew she couldn’t just coast along in the current. But since she’s spent the last couple of years on land—with gorgeous human Quince by her side—Lily’s not sure she has the fins to lead a kingdom. Even her maddeningly pretentious cousin Dosinia seems to know more about ruling than she does.
But Lily has to dive in deep to keep her promise to Tellin, her mer bond in name only, whose kingdom is suffering in the changing ocean climate. Lily knows this is a seven seas–sized problem: from sea animals dying to oil spills and threats to humans. They’ll need to create some serious waves to make the mer community aware and get it to join together to make things right. Even if that means facing one of the iciest queens in the mer kingdoms.
Just when Lily thinks her double life on land and sea can’t get any more complicated, an ancient mer law might separate Lily and Quince after all. It feels as if the pair is up against a solid tsunami wave!
In this third installment in the series that began with Forgive My Fins and Fins Are Forever, Lily will have to find a way to balance safety and justice for the mer people as well as for the humans she loves.
Fate's thoughts: This book was a great wrap up for the trilogy. The whole series was definitely a sweet and fun read. Lily was very different in this book from what she was in the first book. She' responsible and is over the silly things, like her crush obsession with Brody. She's serious about Quince and she takes her kingdom's safety very seriously. In the last and final book of the series we get to see a different side of her cousin Doe, we also get to see Doe and Brodys' relationship, which was pretty adorable. This book also addresses the issue of the many thing we humans are doing to pollute the ocean. The ending was nice and sweet. Although his book was a little slow paced i did enjoy it very much, it was a great read.