A study by scientists at Sea Life centres across Europe found that the invertebrates move across the sea bed using their two rearmost limbs, leaving the other six free for the important business of feeding.
Researchers who observed the creatures in action found they push off with the "legs" and then employ the other tentacles to pump themselves along.
The study, the largest of its type carried out, was designed to show if octopuses favoured one side or the other.
But it found that octopuses are ambidextrous, though many seem to favour their third arm from the front to eat with.
Link -via Arbroath