Interesting octopus fact of the day. Octopuses have several different ways of getting around.
1. Jet propulsion. The octopus does this by drawing water into its body cavity then squirting it out from the spout under its mantle. The force of the water squirt propels the octopus backwards through the water. To do this, however, it must stop one of its 3 hearts (the one that pumps blood to the organs). Therefore they can’t move like this for prolonged periods.
2. Swimming/gliding. Using its skirts and arms an octopus can successfully maintain momentum once it has started moving, say from pushing off from a rock or using its water jet.
3. Walking on the seabed. Using at least two arms, they quite literally walk along. It’s quite something to see, an octopus walking up behind its pray.
4. Caterpillar-like, using its suckers to produce an anchor point and combinations of contractions and extensions of its tentacles to produce movement. This is particularly useful crawling over rocks or hoping from one rock pool to another in search of crabs.
5. Hitch hiking. There have been countless recordings of octopus hitching a ride on all manner of transportation. This includes the hulls of ships, the bodies of divers, whales, turtles, dolphins, canoes, sharks and even submarines. As much of this recorded behaviour is anecdotal it’s hard to tell whether this behaviour is deliberate, accidental, to escape danger, to travel larger distances with less effort or a combination of these things.