The wavewatcher's companion
The book starts with the different types waves on the sea, and this is followed by chapters on sound and electromagnetic waves. Not all waves are moving and sinusoidal, the author also describes standing waves, and shock waves such as that formed when an an aircraft breaks the sound barrier. There can be waves in flocks of birds or crowds - the Mexican wave. The tides also count as a form of waves. The author describes interference of waves and takes a brief foray into quantum theory. The final chapter describes his experiences of surfing in Hawaii.
This book is longlisted for the 2011 Royal Society Science book prize, but I wouldn't expect it to get any further. The author seems to shy away from anything that looks too scientific, for instance I would have expected a discussion of the nonexistence of the luminiferous aether in the chapter on electromagnetic waves. In a sense the ubiquity of waves means that we just get the selection of examples the author wants to talk about, and it isn't a particularly scientific selection. That said, its a well written book, full of interesting facts, with plenty of humour, and its non-technical nature opens it up to a wide readership.