It was deep twilight when we took the picture. Everything seemed so gray and depressing on this page, so I shamelessly stole four snails from the Geometry Center Picture Archive and put them on a bright blue background just to cheer things up.
Digital copying explains why there are now eight.
You can click here to see a copy of the full size original. I'm a mathematician hiding out in a computer science department. I wrote the CS Department's Home Page. My real field is rings of functions, both continuous and analytic. My favorite book is Gillman and Jerison's Rings of Continuous Functions.