Busycon carica (Gmelin, 1791) Female And Two Suitors (Males)
Busycon carica (Melongenidae) image 12362 at PlantSystematics.org
This is the underside of a Knobed Welk (Busycon carica) with is foot retracted and its Operculum clossing it off. | Mermaiden Studio of Photography & Design
Buccino Buccino Conchiglia XL Conchiglia di lumaca di mare - Busycon carica - 22.5×14×12 cm - Catawiki