mudlark

Besides these, there were the mudlark and the scupple hunter: the former prowling about at low water, receiving in his small bag such petty packages as he could get from his dishonest friends on board; and the later sneaking about the wharves and quays, under the pretense of wanting work, to pick up everything and anything that came to hand.

the children were nothing like inert: a large population of junior mudlarks, so long unwashed that you could hardly make them out, climbed among the ruins, cheerfully playing the games that all children play – pushing wheels with sticks, flipping rusty lids and bottle caps in makeshift tiddlywinks.