"From oceans to rivers, salt water to fresh, sharks move silently through the waters around us. Filled with new destinations and new technologies, Shark Week profiles the heart-pounding, real stories of shark attack survivors, looks at the trend of sharks moving from coasts to rivers to our own backyards, and further explores the prehistoric Megalodon, Voodoo Sharks, and more." -- iTunes Store
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Watch history in the making, as a Great White shark gets tracked and filmed by an underwater camera for the first time.
the fine print: Downloads posted on the Free iTunes Downloads blog are usually free for ~1 week. After that, you'll have to pay for them.