Dwayne Johnson has announced, "It's time to set sail," with the release of the first full-length trailer for Moana 2.

The film is a sequel to the 2016 hit Moana, which followed the adventurous Polynesian teenage girl on a daring mission across the ocean to save her people.

Following the trailer's release, some fans expressed excitement for Moana 2, while others questioned the necessity of a sequel.

Auli'i Cravalho and Johnson will reprise their roles as the voices of Moana and Maui, respectively.

The new trailer reveals little about the plot, though Disney has previously provided a rough outline of the story.

"After receiving an unexpected call from her wayfinding ancestors, Moana must journey to the far seas of Oceania and into dangerous, long-lost waters for an adventure unlike anything she's ever faced," the company revealed.

The new animated musical will take audiences "on an expansive new voyage with Moana, Maui and a brand-new crew of unlikely seafarers", it added.

The unlikely seafarers, Moana's rooster Heihei and pet pig Pua, also make an appearance in the trailer.

As Maui holds one in each hand, he jokes to Moana about looking forward to making "bacon and eggs" on the voyage.

Disney hopes the film will appeal to both nostalgic fans and a new generation of children.