Octopi will grow to 10-12 feet. But some claim to have seen octopi up to 200 feet long! "Deep, dark ocean waters make an ideal habitat for the giant octopus, or Octopus Giganteus. Sightings of the creature that fishermen dubbed the "Lusca" have been reported around the deep craters in the ocean floor near Andros, the largest island of the Bahamas. Washington State's Puget Sound, where the bottom can drop off by 700 feet or more, also makes a comfortable home for giant octopi. Octopus Giganteus has been described as a creature with an arm span of up to 200 feet, some 15-20 times that of the largest known species of octopus, the Giant Pacific Octopus. Like octopi, it is assumed to be boneless, with a body completely made of muscle. As the beak of the Giant Pacific Octopus measures two to three inches in diameter, the giant octopus may have a beak 15 times larger, or some four feet in diameter."