Describes what marine biologists have learned about the elusive giant squid from the clues they leave behind such as a whale's ring-shaped scars, a piece of beak found in a whale's belly, and traces of ink left in the wake of a fleeing shadow. Discusses the giant squid's physical traits, behaviors, and habitat, and celebrates the recent spotting of a giant squid in its natural habitat. Teaching Books: https://www.teachingbooks.net/tb.cgi?tid=51858.