DHyslop;81046 said:There are a lot of other criteria floating the internet on how to tell them apart. These include size and distinctive patterns in the false-eye spots. I'm skeptical of how useful these characters are because I haven't yet found mention of them in the scientific journals (If anyone has a reference otherwise please let me know!).
The ocellus in Octopus bimaculatus contains an iridescent blue ring in the form of broken chain links with spokes extending to the outer edge of the false-eye spot.
The iridescent ring within the ocellus is in the form of unbroken chain links.