The first full trailer for James Cameron's Avatar sequel has been released, returning viewers to the planet of Pandora nearly 13 years on.
The two-and-a-half-minute teaser for Avatar: The Way Of Water, introduces Jake and Neytiri Sully and their children, more than a decade after the events of the first film.
The new trailer takes viewers below the waves of the ocean filled with fantastic creatures resembling colourful jellyfish, whales and large winged fish.
Jake is seen teaching his daughter to hunt with a bow, as she tells him: "Dad, you know I think I am crazy, but I feel her. I hear her heartbeat. She is so close."
He asks: "So what does her heartbeat sound like?" before she replies, "mighty".
The Na'vi people native to Pandora are also seen going back into battle with what appear to be humans using advanced technology and weaponised "mech suits".
The cast for the much-anticipated sequel to the 2009 original includes Sam Worthington and Zoe Saldana and will also see the return of Stephen Lang, who plays Colonel Miles Quaritch, and Sigourney Weaver.
Weaver, 73, played scientist Dr Grace Augustine in the first movie, but will return as Kiri - Jake and Neytiri's adopted teenage daughter for the sequel, which is in UK cinemas from 16 December.
Titanic and Mare of Easttown actress Kate Winslet joins the cast alongside other newcomers Michelle Yeoh, Vin Diesel and Edie Falco.
The original sci-fi epic won three Oscars for its stunning visual effects, cinematography and art direction and took almost $3bn (£2.6bn) at the box office.
The film was set in the year 2154 and saw humans inhabit avatars, so they could gain access to the planet of Pandora.