James Cameron, a great lover of diving and all things sub-aquatic has is celebrating his 56th birthday by traveling in a Mir-1 submersible to the bottom of the Russian Lake Baikal in Siberia.

Cameron, and his wife Suzy, were invited on the dive by his friend Anatoly Sagalevich, who helped in the filming of “Titanic”. In fact the small submersible that they will travel in was the same sort used in the underwater scenes in the movie.

Cameron had the chance to make this 5,200 foot dive as his friend Sagalevich is the head of the Science Academy’s diving research program. He also decided to make the dive as he is concerned over the environment and wanted to draw the world’s attention to the pollution problems in that area.

Before he set off Cameron said he was looking forward to celebrating his birthday on the dive. He said he would definitely go through with the expedition “unless it's bad weather, in which case I'll be getting drunk with the Russian crew in the port.”

Cameron is also working on other underwater projects. He is currently working on the construction of a submarine in Australia which will take him 36,000 feet underwater. He is also working on the development of a new 3-D underwater camera which he will use on the underwater feature film.