Nautilus (from Greek ναυτίλος, 'sailor') is the common name of pelagic marine mollusks of the cephalopod family Nautilidae, the sole extant family of the superfamily Nautilaceae and of its smaller but near equal suborder, Nautilina. It comprises six living species in two genera, the type of which is the genus Nautilus. Though it more specifically refers to species Nautilus pompilius, the name chambered nautilus is also used for any species of the Nautilidae.

Nautilidae, both extant and extinct, are characterized by involute or slightly evolute shells that are generally smooth, with compressed or depressed whorl sections, straight to sinuous sutures, and a tubular, generally central siphuncle. Having survived relatively unchanged for millions of years, nautiluses represent the only living members of the subclass Nautiloidea, and are often considered "living fossils."

The name "nautilus" originally referred to the pelagic octopuses of the genus Argonauta, otherwise known as paper nautiluses, as the ancients believed these animals used their two expanded arms as sails.

Read more about Nautilus:  Anatomy, Evolution, Taxonomy, In Popular Culture

Other articles related to "nautilus":

Nautilus, Inc. - History
... The current corporate flavor of Nautilus originates in 1986 with the sale of most of the company by the inventor of Nautilus, Arthur Jones ... Nautilus became a publicly traded company in May 1999 ... The original form of Nautilus dates back to the late 1960s or early 1970s—depending on how Nautilus is conceived ...
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... The Secret of the Nautilus is a 2002 adventure video game, inspired by Jules Verne's science fiction novel Twenty Thousand Leagues Under the Sea ... The vessel turns out to be the famous Nautilus which was abandoned a great many years earlier by its Captain, Nemo ...
Les Mystères Du Nautilus
... Les Mystères du Nautilus (French for "The Mysteries of the Nautilus") is a walkthrough attraction at Disneyland Paris in France ...
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... reactivated after 12,000 years by Nemo's crew after the demise of Nautilus in episodes 21 and 22 ... New Nautilus' Orpheus engine draws power from aberrations in the gravitational field of two black holes orbiting one around the other ...

Famous quotes containing the word nautilus:

    We are taking the Nautilus down for the last time.
    Earl Felton, and Richard Fleischer. Captain Nemo (James Mason)