Whelk {Buccinum undatum}
An under-used species, whelks are a sustainable exotic. They are often used in creative ways by chefs, and are popular in Mediterranean countries. They also feature in Korean and Japanese cuisines.
If you take a walk along any beach in Britain you’re likely too see plenty of empty whelk shells. The shells live on long after the whelk has died, and often become homes for hermit crabs.