Cameron to celebrate his birthday underwater

SIBERIA, Russia The writer and director of "/*Avatar*/" says weather permitting, he will be in a submersible about 5,200 feet beneath Russia's Lake Baikal, the world's oldest and deepest freshwater lake.

"Unless it's bad weather, in which case I'll be getting drunk with the Russian crew in the port," Cameron said.

Cameron is no stranger to underwater exploration and considers himself an expert in underwater filming. His 1989 film "The Abyss," which he also wrote and directed, took place almost entirely under water.

The director says he has plans for an underwater feature film that he might make before taking on an "Avatar" sequel. He also says he's developing an upgraded 3-D underwater camera and a submarine that will take him 36,000 feet underwater.

More recently, Cameron met with federal officials in June to discuss how to cap the /*leaking oil well*/ in the Gulf of Mexico.

The Associated Press contributed to this report.

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