Not being raised in a location where shingle (pebble) beaches are common, the idea of pebble collecting was not one of which I became aware until a few years ago, when I happened upon the 2018 re-issue of Clarence Ellis’ classic 1954 book “The Pebbles on the Beach; A Spotter’s Guide.” I was instantly captivated by the past-time’s delightful combination of gentle contemplativeness, potential for surprises, and connection to natural history.