...the size of a quarter on the kitchen floor, have recently moved to an entirely different eco-zone and have limited knowledge of turtles aside from being able to say, "Yes, that is a turtle". Once determining, with great difficulty, the species - Northern Diamondback Terrapin - this book was a tremendous help. After I hurdled the basics, I appreciated the fact that this was more of an intermediary than a beginner's guide. It is nearly impossible to find any decent reference material on the subject, particluarly on Diamondback Terrapins, let alone something this easy to follow, in-depth and pictorial. The photos alone, which are sharp, nicely composed and plentiful, make this book worth having.