Unlike the octopus's arms, which that animal often uses ... While the cuttlefish uses its mantle cavity for jet propulsion, it relies on its specialized fins for basic mobility and maintaining ...

An octopus. In particular ... The animal has squirted a jet of water, clearing sand from beneath the lip of the shell. There’s now a small gap between shell and seafloor. In the gap, the ...

Yet when danger looms, the animal can jet away at great speeds ... In this interactive feature, take a look at select parts of this octopus relative and learn more about how this master of ...