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Tonna galea, commonly known as the giant tun, is a species of marine gastropod mollusc in the family Tonnidae (also known as the tun shells). This very large sea snail or tun snail is found in the North Atlantic Ocean as far as the coast of West Africa, in the Mediterranean Sea and the Caribbean Sea.
Turbinella pyrum, common names the chank shell, sacred chank or chank, also known as the divine conch or referred to simply as a conch, is a species of very large sea snail with a gill and an operculum, a marine gastropod mollusk in the family Turbinellidae. This species occurs in the Indian Ocean.
As the veligers mature, they develop their first shell (the smooth protoconch) and turn into very small juvenile snails, at which point they sink to the ocean floor. As is the case in all shelled mollusks, the mantle is what secretes the shell; shell growth begins at what will later become the apex of the shell, and typically rotates clockwise.
Melo melo, common name the Indian volute or bailer shell (also spelled baler), [3] is a very large edible sea snail, a marine gastropod mollusc in the family Volutidae, the volutes. [ 1 ] Distribution
Cypraecassis rufa is a species of large sea snail, a predatory marine gastropod mollusc in the family Cassidae.It is commonly known as the "bullmouth shell" or "red helmet shell," and also as the "cameo shell."
It refers to the shell of a large sea snail from the Indian Ocean (a shell of the species Turbinella pyrum), but one that has a rare reverse-turning spiral. The shankha is held with the spout (siphonal canal) pointed up; its spiral twists rightwards rather than the more common form, which twists leftwards.
Xenophoridae belongs to the superfamily Stromboidea, which also includes the true conchs (). [2] It had previously been placed in a monotypic superfamily, Xenophoroidea, [3] but placement in Stromboidea is supported by behavioral, [4] anatomical, [5] and genetic data. [6]
Sometimes the coloration consists of very narrow numerous radiating lines, usually broken into tessellations articulating the lirae. The base of the shell is radiately painted with zigzag flames, or more frequently, narrow lines, either continuous or interrupted, often broken into a maculated or a finely tessellated pattern, sometimes ...