I have a question I've been pondering for, literally, YEARS and have been unable to find an answer for. I was wondering if anyone knew if there were any species of Cephalopods whose diets consisted to any degree of non-Animal or Vegetative material. Now, I highly doubt there is any such thing as an Herbivorous Cephalopod (though I would be delighted to discover this!), but I wonder if there might be some specy (I have no idea if 'specy' is linguistically correct in any way or not, but it's a convention I've used for the singular of 'species' for years now) out there that ingests Macroalgae or perhaps even sessile Organisms like Cnidarians or something. Anyone have a clue?