Reading the source page, it appears that the hectocotylus is the severed third left arm of a male Argonaut. Presumably the torn looking part in the middle is where it used to be attached to the male.
David Marjanovićsays
The thick end is attached to the rest of the male. The thin end goes into the female.
bodach says
what the hell? Which end goes where?
Jethro says
Reading the source page, it appears that the hectocotylus is the severed third left arm of a male Argonaut. Presumably the torn looking part in the middle is where it used to be attached to the male.
David Marjanović says
The thick end is attached to the rest of the male. The thin end goes into the female.
Chengis Khan, The Cryofly says
Thought you might be interested, today being the V day.
http://www.npr.org/2014/02/14/277049009/the-myth-about-mollusks-are-oysters-aphrodisiacs?ft=1&f=1007
WMDKitty -- Survivor says
*stalk stalk stalk*
*butt-wiggle*
*POUNCE*
*bat bat bat*
bodach says
Thanks for the clarification, Jethro; I went to the link and saw a lot of sciencey words and had to go back to work.