One of the great misconceptions among fly-anglers and writers is that fish see the way humans see. Not only are fish eyes constructed different than human eyes, and for different intended purposes, but fish eyes are wired to fish brains differently. Further, how light acts in water is substantially different from the way it acts in air. There are also other key senses through which fish perceive their food and environment in very different ways from us. And at times these other senses may be even more important in fish feeding behaviors than sight.
As an aquatic biologist, environmental engineer, and avid fly-angler Stoll combines the above observations with the major environmental factors that affect the aquatic environments in which fish live. From this he creates truly unique fly-fishing perspectives and approaches, not only for salmon but for other types of fly-fishing.