There are two types of fly fishing flies, and they are distinguished as surface and sub-surface flies with the surface ones being called dry flies. Discover examples of surface and sub-surface flies with help from a fly fishing guide in this free video on fly fishing flies.Expert: Walt GerykContact: neffguide.comBio: Walt Geryk is an Orvis-endorsed fly and spey fishing guide with over 30 years of experience.Filmmaker: Christian Munoz-Donoso