Underwater Bipedal Locomotion by Octopuses in Disguise

@article{Huffard2005UnderwaterBL,
  title={Underwater Bipedal Locomotion by Octopuses in Disguise},
  author={C. L. Huffard and Farnis B. Boneka and R. Full},
  journal={Science},
  year={2005},
  volume={307},
  pages={1927 - 1927}
}
Here we report bipedal movement with a hydrostatic skeleton. Two species of octopus walk on two alternating arms using a rolling gait and appear to use the remaining six arms for camouflage. Octopus marginatus resembles a coconut, and Octopus (Abdopus) aculeatus, a clump of floating algae. Using underwater video, we analyzed the kinematics of their strides. Each arm was on the sand for more than half of the stride, qualifying this behavior as a form of walking. 
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References

SHOWING 1-10 OF 16 REFERENCES
How do octopuses use their arms?
  • J. Mather
  • Medicine
  • Journal of comparative psychology
  • 1998
TLDR
A taxonomy of the movement patterns of the 8 flexible arms of octopuses is constructed, which appears to be based on radial symmetry, relative equipotentiality of all arms, relative independence of each arm, and separability of components within the arm. Expand
Theories of bipedal walking: an odyssey.
  • C. Vaughan
  • Engineering, Medicine
  • Journal of biomechanics
  • 2003
TLDR
Six theories of bipedal walking are reviewed, suggesting each has some measure of support, and there are other important theories of locomotion which have not been covered in this review. Expand
Body patterns of Octopus vulgaris and maturation of the response to disturbance.
TLDR
A cryptic pattern, the flamboyant, appears in early settling stages as a generalized response to disturbance, both to a new environment and to the approach of threatening shapes. Expand
Patterns of Arm Muscle Activation Involved in Octopus Reaching Movements
TLDR
The results suggest that feed-forward motor commands play an important role in the control of movement velocity and that simple adjustment of the excitation levels at the initial stages of the movement can set the velocity profile of the whole movement. Expand
Tongues, tentacles and trunks: the biomechanics of movement in muscular‐hydrostats
TLDR
The means by which muscular-hydrostats produce elongation, shortening, bending and torsion are discussed. Expand
Control of Octopus Arm Extension by a Peripheral Motor Program
TLDR
It is shown that arm extensions can be evoked mechanically or electrically in arms whose connection with the brain has been severed, suggesting that the basic motor program for voluntary movement is embedded within the neural circuitry of the arm itself. Expand
J. Biomech
  • J. Biomech
  • 2003
Biol. J. Linn. Soc
  • Biol. J. Linn. Soc
  • 1999
J. Comp. Psychol
  • J. Comp. Psychol
  • 1998
J. Neurosci
  • J. Neurosci
  • 1998
...
1
2
...