You can watch it on Mango TV. The world-famous cartoon The Octonauts was released in 2023. According to Mango TV search, you can watch the eighth season of Mr. Octopus for free on Mango TV. The eighth season of "Submarine Column" was staged on the stage of ocean and land, with Captain Barker as the core of leadership, and assembled team members such as Guaji, Dr. Pi, Daxi, Professor Zhang and so on to jointly complete the mission of "exploration, rescue and protection".