“Drain the Ocean” will be aired Sunday, August 16, 2 p.m. on the National Geographic channel. The special put computer-generated imagery and digital mapping technology to imaginative use through showing what the oceans would look like if all their water was emptied through an imaginary drain. The result would be a landscape far more dramatic than anything on dry land, including a 40,000 mile-long mountain range, the world’s deepest canyon and widest plains, and bizarre, bioluminescent life forms
