Bellybutton nautilus
Amazing fact
Bellybutton nautiluses adjust gas inside their bodies to move up and down in the water.
Australian Museum
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An illustration based on the real animal.
A little discovery to share.
Bellybutton nautiluses adjust gas inside their bodies to move up and down in the water.
THE REAL WORLD
The real Bellybutton nautilus
- Scientific name
- Nautilus macromphalus
- Japanese name
- オオベソオウムガイ
- Group
- Ocean animals
- Class
- Cephalopoda
- Order
- Nautilida
- Family
- Nautilidae
- Genus
- Nautilus
How the Bellybutton nautilus lives
They may rise into shallow water at night to feed. Their eyesight is poor, and they find food using smell and touch. They mainly eat the remains of dead animals. They live in waters of continental shelves and slopes associated with coral reefs.
Australian MuseumBasic data
- Range
- Waters around New Caledonia
Where the Bellybutton nautilus has been recorded
Records: GBIF.org (CC0 and CC BY 4.0 records, retrieved 2026-11-07). Map: Natural EarthSee the records on GBIF
Watch wild animals from a distance. Do not touch or feed them, and take care of the places where they live.
Names around the world
- 日本語
- オオベソオウムガイ
- 简体中文
- 大脐鹦鹉螺
- 繁體中文
- 大臍鸚鵡螺
- 한국어
- 배꼽앵무조개
- Español
- Nautilo Ombligo
- Français
- Nautile ombiliqué
- Português (Brasil)
- Náutilo-da-Nova-Caledônia
- Italiano
- Nautilo della Nuova Caledonia
- العربية
- نوتيلوس السرة
- Tiếng Việt
- Ốc anh vũ New Caledonia
Names come from Wikidata and iNaturalist records. Where a language has no recorded name, we use the scientific name.
Sources and how we check
- 鳥羽水族館 — オオベソオウムガイChecked: 2026-11-04
- Australian Museum — Nautilus macromphalusChecked: 2026-11-07
We check each fact against its source. The illustrations simplify how the real animal looks.
The classification (class, order, family, genus) follows Wikidata records, checked against GBIF. Classifications can change as research goes on.
The basic data are the values given in each source. They vary with how the animal is measured, whether it is male or female, and whether it lives in the wild or in captivity.
This page was translated from the original Japanese with the help of AI.
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