Gilbert the Great, by Jane Clarke and Charles Fuge

This is the story of Gilbert, a great white shark who loses his remora. My son loves this book. The storyline is easy to follow, and the illustrations are beautiful - although you may need to gen up on underwater creatures. There are lots of little phrases for the amusement of the parents - I find these fall a little flat, and the ending is twee but these don't seem to put my son off.