Knobbed whelk
（重定向自Busycon carica）
![](/Images/godic/202501/02/Busycon_carica0316.jpg")
![Knobbed whelk shells](/Images/godic/202501/02/Knobbed_whelk_shells0316.jpg")
![Whelk egg case](/Images/godic/202501/02/Whelkeggcase0316.jpg")
The knobbed whelk, Busycon carica, is a species of very large predatory sea snail, or in the USA, a whelk, a marine gastropod mollusk in the family Buccinidae, the busycon whelks.
The knobbed whelk is the second largest species of busycon whelk, ranging in size up to 12 in (305 mm).