In Shark Alley, South Africa, people often go underwater in protected environments to watch sharks in their natural surroundings. Some people believe this makes the sharks more violent. Others feel there?s no change in behavior. Two researchers want to find the truth. How do they study the sharks? What they find out? Welcome the sights and sounds of the world with the Footprint Reading Library. Accompanied by original video material developed by National Geographic Digital Media, this is the first non-fiction reading series to present fascinating real-world stories in three formats: print, audio, and video.
