how big can octopuses get
Giant Pacific octopuses live up to their names. While they average 90 pounds, theyâre known to weigh up to 150, with the largest authenticated weight coming in at 156 pounds. And their arm spans can be up to an incredible 20 feet acrossâabout the height of a two-story building. Giant Pacific octopuses have huge appetites. Their diets consist of crustaceans (Dungeness crabs are a particular favorite); mollusks such as clams, squid, and even other species of octopus; and fish. In the wild, their rocky dens can be recognized by the piles of discarded shells just outside the entrances.