David Mckee 
Mr Benn: Diver [EPUB ebook] 

Mr Benn is an ordinary man who visits a fancy-dress shop where he tries on an outfit and enters a world of magical adventures!Mr Benn puts on a diving suit and plunges into the middle of an argument between two submarines. With the help of a mermaid, and even King Neptune himself, he resolves the row, by creating two sea monsters!A much-loved classic children’s character reissued for children of today to enjoy!’The very name is enough to induce a warm glow of childish bliss…’ Telegraph