In four years of work, I've idled my Zodiac down every one of its thousands of inlets, looked at every inch of its fractal coastline and found every single goddamned pipe that empties into it. Some of the pipes are big enough to park a car in and some are the size of your finger, but all of them have told their story to my gas chromatograph. And often it's the littlest pipes that cause the most damage. When I see a big huge pipe coming right out of a factory, I'm betting the pumpers have at least read the EPA regs. But when I find a tiny one, hidden below the waterline, sprouting from a mile-wide industrial carnival, I put on gloves before taking my sample.
And sometimes the gloves melt.
Neal Stephenson