We have recently added a third DVD in the Underwater World Of Trout DVD series. The latest DVD, Trout Vision and Refraction, examine's the physiology of a trout's eyes, the refraction of light in the water, rod flash, and basically how we see the trout in the water and how they see us. These amazing underwater DVD's of the trout in their world are sure to give you great insight into how to fish more effectively for trout.