Rating: 3.5/5 
 ***Minor spoilers*** 
 Emma has lived her whole life being pretty normal. She has weirdly overprotective mom, and amazing best friend, and she's doing well in school. Her whole life takes a turn when on vacation, her friend Chloe gets viciously attacked by a shark, and somehow Emma ends up telling the shark to get lost, and it actually listened. Galen, who saw the whole thing, is convinced that Emma is a Syrena like himself, but it just doesn't make sense to him. The only thing remotely Syrena about her at first are her violet eyes. Regardless, he's convinced, and he's determined to find out for himself why or how she's hiding it. 
 I didn't go in expecting to like this book that much. I don't have much experience with mermaid novels, and I think the only one I've ever read was Deep Blue which I didn't think was that great, and wasn't an amazing introduction to the genre. But Of Poseidon convinced me that there were good mermaid novels out there. While it wasn't perfect and I had my issues with it, it definitely had me interested, made me smile, and surprised me a couple of times. 
 The first quarter of the book I found a bit questionable. I wanted things to get a move on, and Emma's character seemed too innocent to be 18 years old. I also found Galen really irritating (I still found him irritating by the end of the book, but not as much as I did at first) and her mom was also irritable as well. As the book went along, though, the pace picked up and the characters became more tolerable, thankfully. 
 I enjoyed the plot here, and there was a bit of mystery to it that kept me guessing and making up theories. I didn't expect what happened in the end though and I don't know why I didn't think about it. There's a cliffhanger ending that makes me want to read the next book pretty bad. I'm hoping that in the next book we get to see more of the underwater world that Anna Banks only gave us a glimpse into. 
 Overall, I enjoyed this book more than I expected to. I had my fair share of issues with it but the parts I found good made up for it for the most part. There were a few surprised here and there that I didn't expect coming and were my favourite parts of the book. I'd definitely recommend you give this book a try, and if you haven't had much luck with mermaid books in the past, this one just may redeem them to you.