To tour Dauphin Island visually, you should first click on any one of the six outlined rectangles of the top map. Go ahead, pick one!!
After the left frame loads that map section, scroll left, right, up, and down to find other links. Some are Blue Circles, some solid blue squares, some are green trees and some will only show up as a "hand" when your mouse moves over the area they are in. Click on these to load the right frame with a picture of that area. Some pictures will have a blue border around them, there are other pictures 'under' them if you click on the picture, they will load in that frame.