Analysis of information sources in references of the Wikipedia article "Cephalopod limb" in English language version.
As result, marine biologists tend to refer to them as animals with two legs and six arms.
To most of us it has always seemed obvious that an octopus has eight arms. Octopuses have two legs and six arms Claire Little, a marine expert from the Weymouth Sea Life Centre in Dorset, said: 'We've found that octopuses effectively have six arms and two legs.'