Tonna dunkeri
Tonna dunkeri, common name boxing glove, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.
Description
The length of the shell attains 125 mm.The shell is moderate to large, fragile and globular in shape. It features a very large aperture and a low spire. The surface is sculpted with well-developed, broad, flat-topped spiral cords, and the base has a pronounced siphonal notch. Adult animals lack an operculum. This species is highly variable, with both shallow- and deep-water forms. On the Agulhas Bank, shells tend to be more globular, with a lower spire, a pronounced shoulder, and a slightly sunken suture.
The color of fresh shells is light brown to orange-brown. The ribs are marked with irregular white blotches, bordered by darker brown bars.