The Nature of Things S20 E15 Seal Psychology / Chiricahuas / Violins

Seal Psychology: A study of the ability of seals to navigate and catch fish in waters where it is too dark for the seals to see. Chiricahuas: A look at the Chiricahua mountains and their wildlife in southeast Arizona. Violins: How violins are made, including an interview with a violin maker, and footage of students at the International School of Lute Making in Cremona, Italy.