- Knobbed whelk have a decorative shell with sharp points and a broad spiral. Channeled whelk are smoother and have a tighter spiral. They have a foot which allows them to move over mucous. The largest whelk found by Division of Marine Fisheries was 5.5 inches wide.
- Species name: Busycotypus canaliculatus (Channeled whelk)
- Species name: Busycon carica (Knobbed whelk)
- Whelk are less than .25 inches long when they leave their egg casings.
- Whelk live up to 15 years.
- Females fertilize eggs internally, and produce up to 40 capsules which can each hold 100 eggs.
- The egg capsules are laid around August, and anchored to the sea floor.
- Whelk eat shellfish, dead crustaceans and fish.
- Humans are a large predator for Whelk, along with fish, sea stars, and crustaceans.