What a coincidence, I was looking at that very book today in a shop on the way home from work, but instead I bought a book titled Hunters of the Deep, it has some nice diagrams in it and the text is fairly interesting too. I daresay I'll probably be back for that other one too, it looked interesting. I'd probably have bought them both, but the cash machine near the shop was screwed and would only dispense tenners.
Chock