Credits scroll in the opposite direction.
After flashing the production companies onscreen, the opening credits are displayed as characters being typed into a computer, with the lettering having the jagged, flickering look of an old-style CRT screen and the sound of typing heard. This is shown against a background of underwater footage. The look is significant as a main character is a writer, his computer is used as an important plot point at times, and, along with the closing, it bookends the movie appropriately as a creative work of the writer in the film.
The end credits scroll top to bottom, instead of bottom to top, as is usual. Also, they resemble a finished book on an electronic device, as if someone were reading them on a paper white Kindle.