> The aquarium’s manager, Rob Yarrall, told Radio New Zealand that employees had searched the aquarium’s pipes after discovering Inky’s trail, to no avail.
In that vein, how often do octopi get out of the water (except when being brought out by humans)? And, are they aware of "water" vs "not-water"?
I already lmgtfy.com'ed all of these... just adding to the discussion.
And while a lost human might reason about following a river to civilization, I don't think there are similar drains in the ocean. If it made that connection, I am seriously impressed! While that's a well known tactic for explorers, many lost humans don't know it and don't figure it out!
My leading guess, though, is that he observed workers pouring other ocean things, probably including some tasty octopus food, down the drain.
Properly engineered drains are, especially if they have traps. You must hang around different drains than I.