It's one of the ocean's most enigmatic creatures, with eight legs, high intelligence and the ability to discreetly melt into its surroundings. The giant octopus is said to reach 33 feet across, can weigh 400 pounds and is known as the "devilfish" for the horns above its eyes. With the ability to kill sharks, this is one animal even larger in life than in legend. Now, a team of intrepid explorers dive into the wild depths of the Pacific in hopes of unlocking the secrets to this mysterious and magnificent animal. Journey through ghostly shipwrecks and wildlife on a deep-sea adventure into the world of the giant octopus. And discover these creatures' phenomenal size, remarkable intelligence and extraordinary ability to morph in response to their surroundings. (Source: National Geographic Wild Channel)