How do squids and octopuses move in water?

Answer 1

Octopus in particular have three different ways to move:

• they can use their arms to pull themselves along in a sort of crawl
• they can use their arms to swin a little
• and when they really want to move they can use jet propulsion, they suck in water and then push the water out of their mantle

One difference between the two is that the octopus is basically a bottom dweller while the squid is more free-swimming. So while squid certainly have arms, they don't use them to get around much.

• Squids have fins running along their body, that they use for swimming
• squids also have the jet propulsion option, with sucking in water and squirting it out.

Answer 2

Well of course the help the octopus catch its pray

Answer 3

like how does its bend and such, humans use bones as levers but octopi and squid have none