Part of the Eyewitness educational video series, which features simple discussions of scientific material one topic at a time for kids and parents, too, Eyewitness: Shell celebrates the shell. Analyzing its evolutionary time line and its important influence on the architecture of mankind, the program teaches viewers about the structure of the egg, the turtle shell, the crab shell, the nautilus, and many more. A deceptively simple construction, the shell is a structure offering protection and ultimately survival. ~ Betsy Boyd, Rovi