Nautilus (from Latin nautilus 'paper nautilus', from Ancient Greek ναυτίλος nautílos 'little sailor') are the ancient pelagic marine mollusc species of the cephalopod family Nautilidae. This is the sole extant family of the superfamily See more

Buoyancy and movement
To swim, the nautilus draws water into and out of the living chamber with its hyponome, which uses jet propulsion. This mode of … See more

Range and habitat
Nautiluses are only found in the Indo-Pacific, from 30° N to 30° S latitude and 90° E to 175° E longitude. They inhabit the deep slopes of See more

The family Nautilidae contains up to nine extant species and several extinct species:
• Genus Allonautilus
• Genus Nautilus
Genetic data collected in 2011 pointed to there being only … See more

Tentacles
The arm crown of modern nautilids (genera Nautilus and Allonautilus) is very distinct in comparison to coleoids. Unlike the ten-armed See more

Fossil records indicate that nautiloids have experienced minimal morphological changes over the past 500 million years. Many were initially straight-shelled, as in the extinct genus Lituites. They developed in the Late Cambrian period and became a significant group of … See more

Nautilus are collected or fished for sale as live animals or to carve the shells for souvenirs and collectibles, not for just the shape of their shells, … See more