| Costate tun | |
|---|---|
 | |
| Two views of a shell of Tonna allium | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Tonnidae |
| Genus: | Tonna |
| Species: | T. allium |
| Binomial name | |
| Tonna allium | |
| Synonyms [2] | |
| |
Tonna allium, common name the costate tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells. [2]
The size of an adult shell varies between 50 mm and 131 mm.
 | This section needs expansion. You can help by adding to it. (April 2011) |
This species occurs in the Indian Ocean off Madagascar, the Mascarene Basin and Mauritius.
The Tonnidae are a family of medium-sized to very large sea snails, known as the tun shells. These are marine gastropod molluscs in the clade Littorinimorpha. The name tun refers to the snails' shell shape, which resembles wine casks known as "tuns". While thin, the shells are also strong and lack opercula. They are found in all tropical seas, where they inhabit sandy areas. During the day, they bury themselves in the substrate, emerging at night to feed on echinoderms, crustaceans, and bivalves. Some larger species also capture fish, using their expandable probosces to swallow them whole. Females lay rows of eggs that become free-swimming larvae for several months before settling to the bottom.
Tonna cumingi, common name Cuming's tun, is a species of very large sea snail, a tun snail, a marine gastropod mollusc in the family Tonnidae, the tuns.
Tonna is a genus of large sea snails, marine gastropod molluscs in the family Tonnidae, the tun or cask shells.
Tonna dolium, common name the spotted tun, is a species of large sea snail or tun snail, a marine gastropod mollusc in the family Tonnidae, the tun shells.
Tonna perdix, common name the partridge tun, is a species of very large sea snail, a marine gastropod mollusc in the family Tonnidae, the tun shells.
Mammilla melanostoma is a species of predatory sea snail, a marine gastropod mollusk in the family Naticidae, the moon snails.
Tonna boucheti is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.
Tonna dunkeri is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.
Tonna hawaiiensis is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.
Tonna lischkeana is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.
Tonna morrisoni is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.
Tonna oentoengi is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.
Tonna sulcosa, common name banded tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.
Tonna tessellata, the mosaic tun, tessellate tun or maculated tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae.
Tonna zonata is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.
Eudolium is a genus of large sea snails, marine gastropod mollusks in the family Tonnidae, the tun shells.
Malea is a genus of large sea snails, marine gastropod mollusks in the family Tonnidae, the tun shells.
Tonna chinensis, common name : the China tun, is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells.
Tonna variegata, commonly known as the variegated tun, is a species of marine gastropod mollusc in the family Tonnidae.
Vexillum pardale is a species of sea snail, a marine gastropod mollusk, in the family Costellariidae, the ribbed miters.
