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In the Big Blue – Underwater Photography by Mattias Ormestad | Pondly

In the Big Blue – Underwater Photography by Mattias Ormestad

Image result for nautilus automata

The Nautilus: A Living fossil of the Seas. Found in abundance in prehistoric times, the nautilus’ numbers have dwindled and only a handful of species remain today.

It's like a never ending stairway

I love the shape of this shell and how the smooth spiral contrasts with the spikes around the edges. I also like the tiny detailing going around the spiral of the shell.

Nautilus - a pelagic marine mollusc of the cephalopod family by Dave Deepwater.

Nautiluses are the sole living cephalopods whose bony body structure is externalized as a shell. The animal can withdraw completely into its shell and close the opening with a leathery hood formed from two specially folded tentacles.

The nautilus is considered to be a living fossil. It's remained largely unchanged for the past 500 million years, since the Triassic period. The nautilus usually inhabits ocean depths of about 300m, rising to around 100m at night only for feeding, mating or laying eggs. The average lifespan of a nautilus is around 20 years.

The Nautilus: A Living fossil of the seas

Nautilus belauensis, a pelagic marine mollusc of the cephalopod family Nautilidae, the sole extant family of the superfamily Nautilaceae and of its smaller but near equal suborder, Nautilina.

Chambered Nautilus Proposed for Endangered Species Act Protection:  Ancient Shellfish, Survivor of Five Mass Extinctions, Threatened by Shell Trade / (image:  Chambered Nautilus) / http://www.biologicaldiversity.org/news/press_releases/2017/chambered-nautilus-10-20-2017.php

Chambered Nautilus Proposed for Endangered Species Act Protection

Click for original picture, attribution details.

chambered nautilus, endangered species, dates back 500 million years

Nautilus

Description and wallpapers of Chambered Nautilus, Perlboot (Nautilus pompilius).

Cephalopods are cool

Nautilus, so intriguing

Parapuzosia seppenradensis is the largest known species of ammonite. It lived during the Late Cretaceous period. A specimen found in Germany in 1895 measures 1.95 m in diameter, although the living chamber is incomplete. It is estimated that if complete, this specimen would have had a diameter of approximately 2.55 m.

Parapuzosia seppenradensis, biggest known ammonite, diameter feet m) TYWKIWDBI

nautilius 2

Juvenile Nautilus: Several new small chambered nautilus have been added to the nautilus tank in the National Aquarium Sensing gallery.

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