Mitromorpha Grammatula
''Mitromorpha grammatula'' is a species of sea snail, a marine gastropod mollusk in the family (biology), family Mitromorphidae. Description The length of the shell attains 4.5 mm, its diameter 2.3 mm. (Original description) The small shell has a short fusiform shape. It contains about five Whorl (mollusc), whorls with a minute smooth protoconch of a 1½ Whorl (mollusc), whorl. its color is a color pale brown, darker in the spiral interspaces which show in the Aperture (mollusc), aperture as dark lines. The suture is minutely channeled. The spiral Sculpture (mollusc), sculpture consists of (on the penultimate whorl three, on the body whorl about a dozen) strong squarish cords with narrower interspaces, growing smaller toward the siphonal canal and covering the entire whorl. The cord in front of the suture is separated by a somewhat wider and deeper interspace from those in front of it. The axial sculpture consists of numerous equal regular narrow sulci, cutting the str ...
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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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