http://www.mindbites.com/lesson/10475 for full video. Gentle giants are lurking at the bottom of some of the most affluent gardens in Florida. Manatees are large aquatic mammals that share the same ancestry as elephants -- they're not well known world wide, but they're a household name in Crystal River, Florida. Every year hundreds of manatees journey north to spend the winter in Crystal River's many canals where natural hot springs provide a lifeline. Their charm and gentle nature has endeared them to the locals, but there are hidden dangers in living so close to humans. A killer that attacks with mechanical precision takes about 80 Florida manatees every year. Who or what is killing these gentle giants and what can be done to stop them?
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