This video from the USA says about itself:
6 January 2017
In this epic adventure taking place on two coasts, Jonathan investigates the world’s largest octopus, the Giant Pacific Octopus! He begins by meeting Sy, one of the octopuses at the New England Aquarium in Boston with cold water aquarist Bill Murphy.
Then Jonathan and Bill travel to the Seattle Aquarium to two of their octopuses Lucy and Odie with Seattle Aquarium aquarist Kathryn Kegel. Bill and Jonathan join Kathryn and her team on some dives in Puget Sound to survey wild octopus populations. Along the way, Jonathan witnesses an incredible octopus fight and gets a small glimpse into the social lives of the Giant Pacific Octopus!