The whelk is a type of sea snail, particularly referring to those of the family Buccinidae. While on vacation in the Isle of Wight during July of 1991, Marjorie Dursley ate a "funny" whelk and thus fell ill, most likely of food poisoning. She wrote a postcard to her brother Vernon to inform him of this occurrence.[1]


Notes and references

  1. Harry Potter and the Philosopher's Stone, Chapter 3 (The Letters from No One)