xyrandomyx
Contributor
I'm only aware of two species in Cape Town: the Common Octopus (octopus vulgaris), which I believe you can find all over the Atlantic and Mediterranean; and the Brush-tipped Octopus (aphrodoctus schultzi), which is rare and endemic to South Africa. The one in that video is a Common Octopus. They get pretty big, arms up to a metre/ three feet long, but not nearly as large as GPOs. I've only seen a few (I'm terrible at spotting them when they're hiding); all of those have been a reddish-brown colour, but the colour varies (and they can change colour).
I'm not sure what species you might've seen in Pemba. I don't have any decent reference books for the western Indian Ocean, just a few fish ID slates. The only octopus on there is the White Spotted Octopus (octopus cyanea), but that doesn't seem to fit the bill: they're a bit smaller than the common octopus.
I'm not sure what species you might've seen in Pemba. I don't have any decent reference books for the western Indian Ocean, just a few fish ID slates. The only octopus on there is the White Spotted Octopus (octopus cyanea), but that doesn't seem to fit the bill: they're a bit smaller than the common octopus.