Blame it on the Lewis’ moon snail. From my first training session with the Stewards of the Coast and Redwoods, veteran tidepoolers regaled me with evocative descriptions of a luminous, majestic sea snail, famed for its architectural wonder of a shell–and named for the famed explorer Meriwether Lewis (as in Lewis and Clark). Guided by a biological blueprint encoded in its genes, the largest of moon snails constructs spiral upon spiral of calcium carbonate and other organic compounds.  At the center of these swirls, a dark apex gleams like an all-seeing eye.