North Atlantic whelk shells wholesale, knobbed whelks, measure between approximately 4-3/4 inches and 5-7/8 inches in size.  The North Atlantic whelk shells, 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.  Atlantic whelk shells are used for making seashell candles, as a seashell planter and perfect shells for airplants and their neutral color makes them a nice shell to display in a basket of shells.  The knobbed whelk is the second largest species of busycon whelk, ranging in size up to 12 inches in size.The Atlantic whelk shells of most knobbed whelks is dextral, meaning that it is right-handed. If the shell is held in front of the viewer, with the spiral end up and the opening facing the viewer, the opening will be on the right side. The shell is thick and strong and has six clockwise coils. The surface is sculpted with fine striations and there is a ring of knob-like projections protruding from the widest part of the coil. The color is ivory or pale gray and the large aperture (the inside of the opening) is orange. The canal inside is wide and the entrance can be closed by a horny oval operculum