filed guide
I love field guides. One should own a lot of field guides, not just to things you might go out in the field to see and identified, but just to browse through.
David Ebert, Sarah Fowler and Marc Dando have produced A Pocket Guide to Sharks of the World It is put out by Princeton, which does excellent guides (this is part of their Pocket Guide series).
From the Princeton site, about the authors:
David A. Ebert is the program director for the Pacific Shark Research Center and a research faculty member at Moss Landing Marine Laboratories. Sarah Fowler cofounded the UK Shark Trust and the…