China's new submarine, headed for the bottom

The BBC has an article (with its usual unbloggable video) about a new Chinese sub:

BBC science correspondent Rebecca Morelle looks inside a life-size model of a submarine which the Chinese hope will take humans to the very bottom of the ocean: the Marianas Trench in the Pacific, at a depth of nearly thirty-six thousand feet.

Rico says all he can remember is Mrs. Tate, his eighth-grade science teacher, pronouncing Marianas Trench in her heavy Louisiana accent...