How to measure a live octopus

Discussion in 'Physiology and Biology' started by Nancy, Sep 15, 2003.

  1. Nancy

    Nancy Titanites Staff Member Moderator

    Joined:
    Nov 20, 2002
    Messages:
    5,584
    Likes Received:
    71
    Location:
    Dallas Texas
    We were discussing this over on Ceph Care - Jean thought you might know the answer, Steve....(or Kat)

    Is the only accurate way to measure a live octopus by the distance between the eyes? If this is so, how do you take this measurement?

    I can measure Ollie and get a different answer for arm length and mantle each time I try!

    Thanks,

    Nancy
     
  2. Steve O'Shea

    Steve O'Shea Colossal Squid Supporter

    Joined:
    Nov 19, 2002
    Messages:
    4,668
    Likes Received:
    17
    Hi Nancy. Probably the only reliable way to do it would be to measure the volume of water little Ollie displaced at any point in time; how to relate that back to 'body mass/weight' I don't know. They are such contortionists that none of arm length, mantle length or inter-ocular distance will give the same measurement twice.
    Cheers
    O
     
  3. tonmo

    tonmo Titanites Staff Member Webmaster Moderator

    Joined:
    May 30, 2000
    Messages:
    8,737
    Likes Received:
    515
    Location:
    Pennsylvania
  4. Nancy

    Nancy Titanites Staff Member Moderator

    Joined:
    Nov 20, 2002
    Messages:
    5,584
    Likes Received:
    71
    Location:
    Dallas Texas
    I don't think little Ollie would appreciate being measured by displacing water, so I'll just have to guess how big he is.

    I had forgotten about the chart at the end of your excellent article - It seems that Ollie must be a moderate sized octopus now, and that will have to do :)

    Nancy
     

Share This Page