My son, John, age 9, is doing a research project on the octopus , and is having a difficult time coming up with a comprehensible description of how to tell a boy from a girl. Can anyone help him out?
With profound thanks from Maine,
Hi John's mum (?Lindsay is it). How much time have you got? If the project can wait two days then I can get back in to work and respond with a couple of photographs of boy/girl characters. Basically the tip of the third right arm (or, rarely third left) of the male octopus is modified into a scoop/shovel (calamus/ligula) - there are no suckers at the end (the female has all 8 arms attenuating to fine, sucker-bearing tips.