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O. vulgaris, the common octopus is a group of speices inhabiting tropical to temperate waters. It's found throughout the world.
I think most of the ones we see here in the US come from the Caribbean Sea but I don't know for sure. We usually have one or two Tonmo members keeping vulgaris and I don't believe any of them used a chiller.
So I think the question is, where did these octopuses come from - cooler waters, or is the restaurant using a chiller when it doesn't need to?