So you're a fish. Right now some tubeworm tartare and clams on the half shell would really hit the spot, so you're headed for the all-night café. "All-night" being the operative word because the volcanic ridge you're tooling along is nearly 1.5 miles below the surface. The term "where the sun don't shine" perfectly describes the place. It's pitch black. Darn, but what's that loud rumbling up ahead? Must be one of those pesky black smokers. Some of those babies can fry your face off. A detour is highly indicated.