Book excerpt: Narwhals fans will adore this new addition to Usborne's Magic Painting series. Simply brush water over the pages and watch as they burst into colour, revealing an array of magical scenes. The book comes with a brush - just dip it in water, sweep over the page, and the colours will appear. The laminated back cover folds out so you can place it between the pages and prevent colours running onto the page beneath. Features a range of undersea creatures.