Does the location of where an octopus was imported from determine the flavor/quality of the meat?
actually seafood's country origin does make a very relevant difference. Why? ocean floor type, water tempearture, tradewinds, upwelling and feed availability. Best octopus comes from Spain and Portugal (actually portuguese octopus is the best) Viet, China,  Indonesia or Mexican octopus live in hot water. Portuguese coast has a very mild water temp, from 10 C to 20 C and a lot of sun exposure that triggers phytoplankton blooms. I could expand on this as I am a professional fisherman. Now, any country can import any seafood from anywhere and then label it as "theirs" so one must know which species are native to a certain location. Sustainability is also very imnportant  and both Portugal and Spain are EU members where sustainability is a very serious matter.