cooking.nytimes.com
Whelks are a type of sea snail, or gastropod, inhabiting the Atlantic Ocean and some of its bays and sounds in North America and Europe. In Europe, especially in England, where people eat lots of shelled creatures that might make Americans shudder, whelks are extremely popular. Whelks range in size from a couple of inches — a dozen or so in a pound — to eight or nine inches long. So-called common whelks are the smallest and the ones to seek at the fish market for their briny-sweet taste and only slight chewiness. Larger varieties, like the channeled whelk or the knobbed whelk, are usually sold as scungilli.