Book excerpt: Swim with prehistoric plesiosaurs, explore Poseidon's palace and gather up gold from lost pirate galleons as you dive beneath the waves with this entertaining selection mazes. Each maze is more challenging than the last, from stealthy submarines to salmon spawning grounds, and all the answers are at the back of the book. Contains over 40 highly visual mazes to keep kids entertained for hours. Kids can develop their problem-solving and visual recognition skills as the level of challenge increases gradually throughout the book, whilst finding out all about life and legends of the sea.