Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not impressed

I use this book as the text for my marine biology class. I find the numbering of the book odd. It is done by chapter and page. For example, the 3rd page of the 4th chapter is 4-3. And it is the only book I have ever come across that actually has empty pages. ??????????? I don't get it. The taxonomy is overly simplified. However, as a general Marine Science book, it does the job. More non-biology stuff and not quite appropriate for a class titled Marine Biology.