Book 1 of The Depths Below trilogy. When Ronan was thirteen and started giving people electrical shocks whenever he touched them, he asked his mom why it was happening. She immediately answered static electricity. When he tried to explain that he knew it wasn't static she changed her story saying instead that his father used him as a lightning rod during a bad storm and he happened to be hit by a strong bolt. And for some reason he believed that story... Now... nine years later, he's found he can do more than shock people. He can talk to fish. He thought about asking his mother how something like that could be possible, but he doesn't think he'd get a straight answer. He's beginning to think she's keeping something from him.
