Here are the links that have been requested by many of you for Garmin's website.
Select a Transducer | Garmin. This will help u select which transducer is best for your application
https://www.flickr.com/photos/garmin...7628438217781/. This is a link to garmins images of sidevu, downvu and traditional sonar.
Search Garmin LakeVü Lakes. This is a link to help u find which lakes are on the lakevu card and their detail.