How to Outswim a Shark Without a Snorkel

But when the meanest mean girl at school volunteers at the new aquarium, Ana's life goes from sunny to sunk. Now Ana's stuck working with her archenemy, chasing after escaped hermit crabs, and cleaning up even more animal poop in her life. Ana's newest adventure has her questioning why, after finally getting her life sorted out, do things have to change...again?