Guraleus Halmahericus
''Guraleus halmahericus'' is a species of sea snail, a marine gastropod mollusk in the family (biology), family Mangeliidae.Marshall, B. (2015). Guraleus halmahericus (Schepman, 1913). In: MolluscaBase (2017). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=433936 on 2017-07-11 Description The length of the shell attains 7.5 mm, its width 3 mm. (Original description) The fusiform, pellucid, white shell has a rather short siphonal canal. It contains about 8 Whorl (mollusc), whorls, of which about 3 form the protoconch, which is large, convexly-whorled, at first smooth and then axially ribbed;. The teleoconch whorls are angular and concave above. The Sculpture (mollusc), sculpture consists of rather narrow axial ribs, about 12 or 13 on body whorl, crossed by spirals, of which one more or less strong one, just below the suture, another at the angle and one or two on the lower part. The body whorl with siphonal c ...
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Sea Snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the absence of a visible shell. Definition Determining whether some gastropods should be called sea snails is not always easy. Some species that live in brackish water (such as certain neritids) can be listed as either freshwater snails or marine snails, and some species that live at or just above the high tide level (for example species in the genus '' Truncatella'') are sometimes considered to be sea snails and sometimes listed as land snails. Anatomy Sea snails are a very large group of animals and a very diverse one. Most snails that live in salt water respire using a gill or gills; a few species, though, have a lung, are intertidal, and are active only at low tide when they can move around in the air. These air-breathing species includ ...
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