I just realized that someone else commented earlier saying it's an 1/8... I still hold my math is more sound.

I was also going to say that that looks a lot more like knitting than I've seen other crotchet look, and as far as I know, knitting is easier. And I'm sure there are knit octopus patterns out there. And Miss Marple does it. So you should look into that. :D I know I do!