The Flamboyant cuttlefish's lack of ability to swim means they have to use their tentacles to walk around on the sea floor.
Cuttlefish is a favorite food in many parts of the world. Dried, shredded cuttlefish is a favorite delicacy. In Portugal, you can order 'Chocos Fritos' which is fried cuttlefish.
Bigger species of cuttlefish such as the Broadclub, can swim without hindrance. They have a frilly skirt around their mantle which controls most of their directional movement.
Under the cuttlefish's tentacles is an opening called a siphon. It works in the same was as a jet engine, allowing the cuttlefish to shoot off for a quick get away.