Savage Seas: Killer Waves

One of the sea's most dangerous and least understood phenomena, killer waves can form without warning, taking lives and devastating property. Voyage to the world's most treacherous regions, where ocean meets land with terrifying results. Coast Guard cadets brave the waters off Georgia's Cape Disappointment, sharks add even greater danger to massive waves near Maui and a cruise ship sinks off the rugged South African coast in eye-popping footage.