Avatar 2 and Avatar 3 filmed at the same time, with the live-action segments completed after the motion-capture work. On November 29, the official Avatar Twitter account announced that filming for the Avatar sequels had come to a close for the year. But it was anything but a melancholy message. They announced, “That’s a wrap, Na’vi Nation! It’s our last day of live-action filming in 2019, and we’re celebrating with a sneak peek. Check out this photo of the aft well deck section of the Sea Dragon, a massive mothership that carries an array of other sea-going craft in the sequels.”
Article source: https://www.cinemablend.com/news/2485802/avatar-2-sneak-peek-sequels-celebrate-end-of-2019-filming-with-huge-set-photo