They look like something straight out of a science fiction film. With eyes the size of basketballs, giant squids are perhaps one of the strangest and most elusive creatures on the planet. Scientists have previously measured more than 130 specimens, and say the biggest they've found is 42 feet (13 metres) in length. Now, a new statistical study of these sea monsters suggests they could reach 65 feet (20 metres) in length – or the size of a school bus. Scientists have previously measure more than 130 specimens, and say the biggest they've found is 42 feet (13 meters) in length.