" The affection the aquarists felt for the octopus appeared to be mutual. For the hours that they swam together, though the massive octopus could have easily escaped them, the Dude chose instead to keep his human friends by his side. Only when their tanks ran low on air did the divers reluctantly bid the Dude--"the best giant Pacific octopus in the world," wrote one--goodbye. "

― Sy Montgomery , The Soul of an Octopus: A Surprising Exploration Into the Wonder of Consciousness