River McIntyre has grown up down the street from Sea Planet, an infamous marine life theme park slowly going out of business in small-town Ohio. When a chance encounter with a happy, healthy queer person on the annual field trip lands River literally in the shark tank, they must admit the truth: they don't know who they are--only what they've been told to be. This sets off a wrenching journey of self-discovery, from internalized homophobia and gender dysphoria, through layers of coming out, affirmation surgery, and true freakin' love.

"River is the most emotionally engaging character I've read in a long time, and this novel is a deep and comprehensive exploration of the journey transgender people trek through the confining world they're born into. Eye-opening, heartfelt, and real--with a massive payoff of true love." --A.S. King, author of Dig, winner of the Michael L. Printz Award