The upcoming sequel to James Cameron's record-breaking film "Avatar" is going to showcase a whole new area of Pandora.

With the destruction of the Na'vi's Hometree in the first flick, Jake Sully, Neytiri and the rest of the tribe are apparently going to be spending some quality time [article id="1637529"]in the planet's ocean[/article]. And, to try to keep the filmgoing experience as authentic as possible, Cameron would like to [article id="1645624"]shoot those scenes underwater[/article].

As an avid fan of diving, this is a passion project for Cameron, though he admitted to MTV News in the past that he likes to keep his work and extracurriculars separate. At least it's not going to be all new to him, as Cameron previously said that he learned a few tricks from producing the underwater thriller "Sanctum." The difficulty is trying to figure out how to do performance capture underwater, which is something he said has never been done before.

In preparation for the film, Cameron is apparently trying to convince his leading man, Sam Worthington, to go diving with him.

"He's trying to get me to scuba-dive," Worthington told MTV News on Friday (January 6). "I've never been, but he got me the gear and the tanks, so I've got to give it a go. I've got to get my lessons. I'm a bit nervous."

Worthington's quickly running out of time to start training, though, as his "Avatar" costar Sigourney Weaver started the rumor that Cameron plans to get the cameras rolling on "Avatar 2" at some point in 2012.

Worthington admitted that he's a little uncomfortable with the concept of learning how to scuba-dive and shooting underwater. Turns out he's more afraid of filming in the ocean than he was of heights, a fear he had to cope with while shooting his upcoming thriller "Man on a Ledge," out January 27.

"I love the ocean, but I'm just a bit unsure about it. I suppose once I'm down there and have done it, it will be [snaps fingers]," Worthington said. "I'm not worried about [the unknown]; that's the exciting part. It's more the claustrophobia."

But sacrifices must be made for the greater good of the film. Cameron told MTV News that he wanted to shoot in the water because "we'll have characters that are in and under the water." At least Worthington has a better sense of how the ocean plotline will fit into the greater "Avatar" narrative than we do.

"I don't know when [Cameron]'s going to start 'Avatar 2,' but I know he's been telling me bits about it," he said.

Check out everything we've got on "Avatar 2."

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