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The gastropod shell is part of the body of many gastropods, including snails, a kind of mollusc. The shell is an exoskeleton , which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium storage.
The Terebridae, commonly referred to as auger shells or auger snails, is a family of predatory marine gastropods in the superfamily Conoidea. [3] They have extremely high-spired shells with numerous whorls; their common name refers to the resemblance of their shells to rock-drill bits.
The Vermetidae, the worm snails or worm shells, are a taxonomic family of small to medium-sized sea snails, marine gastropod molluscs in the clade Littorinimorpha. [1] The shells of species in the family Vermetidae are extremely irregular, and do not resemble the average snail shell, hence the common name "worm shells" or "worm snails".
The large head has the eyes sessile on the sides below the base of the tentacles. The tentacles are far apart, united by a broad veil over the head.
Syrinx aruanus, common name the Australian trumpet or false trumpet, is a species of extremely large sea snail measuring up to 75 cm long and weighing up to 18 kg. It is a marine gastropod mollusk in the family Turbinellidae, and is the only species in the genus Syrinx.
Haliotis asinina, common name the ass's-ear abalone, is a fairly large species of sea snail, a tropical gastropod mollusk in the family Haliotidae, the abalone, also known as ormers or pāua. Both the common name and the scientific name are based on the shape of the shell, which is long, narrow and curved, resembling the shape of a donkey's ear.
Hexaplex cichoreum, common name the "endive murex", is a medium-sized species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex shells or rock snails. [ 2 ] Description
Portal:Gastropods/Selected picture/1 . The sculpture of this shell of Epitonium scalare is raised vertical ribs which are known as costae.Costae are a common feature in the shells of many species within the genus Epitonium, generally known as wentletraps (a word derived from the Dutch word for spiral staircase).