Mermaid You Look by Andres Miedoso

There's trouble brewing of mythic proportions, making the residents of Kersville go mer-mad, in this sixteenth adventure in the Desmond Cole Ghost Patrol series! Something is fishy at the Kersville Aquarium and it's not just the fish. Okay, it is the fish, but there's a bigger mystery lurking in the water. It's slimy. It's sneaky. And it sings an eerie song so strong that no one ever escapes! With easy-to-read language and illustrations on almost every page, the Desmond Cole Ghost Patrol chapter books are perfect for emerging readers.