We’re about 600 to 3,000 feet below the ocean’s surface. It’s cold, it’s dark and it’s slow down here. If you’re lucky, it’s blue in the daytime and black at night. And the deeper we go, the darker it gets. Welcome to the twilight zone, fishes.
ANOTHER BONUS: Gizmodo has a nice animated GIF of this animal’s neck joint in action. Scroll down for other visuals.