Do these 3 things before closing this tab:
1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsThe Australian trumpet, Syrinx aruanus, is a marine gastropod whose shell can approach a metre in length. The Western Australian Museum gives a maximum length of 91 cm and a weight of up to 18 kg; Queensland Museum gives a different figure, saying its shell reaches 70 cm. Those are separate museum claims, and neither page explains the difference.
What is the Australian trumpet?
Syrinx aruanus is a large sea snail, or gastropod, known by several common names: Australian trumpet, Australian trumpet shell, false trumpet, and giant whelk. Museums Victoria uses the common name Australian trumpet shell for a specimen identified as Syrinx aruanus (Linnaeus, 1758). The Queensland Museum page spells the name “Syrinx aruana”; this article follows the spelling used by the Western Australian Museum and Museums Victoria.
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The Western Australian Museum calls it the world’s largest gastropod. Queensland Museum describes it as having the world’s largest snail shell. These claims concern snails and gastropods, not the broader category of all molluscs.
How big is the Australian trumpet snail?
Museum sources report different maximum measurements, so it is important to keep each figure attached to its source and what it measures.
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| Source | Reported maximum | What the figure describes |
|---|---|---|
| Western Australian Museum, “West Coast Marine Molluscs” | 91 cm; up to 18 kg | Maximum length and weight |
| Queensland Museum, “Gastropods – Animals of Queensland” | 70 cm | Maximum shell length |
The museum pages do not explain why their length figures differ, and they do not provide a common measurement method or a publication date for these statements. The defensible takeaway is that this is an exceptionally large marine snail; “almost one metre” refers to the Western Australian Museum’s stated 91 cm maximum, not a measurement both museums share.
Where does the giant Australian trumpet live?
Queensland Museum gives the species’ range as northern Australia, New Guinea, and Indonesia, from the intertidal zone down to 50 m. This describes the range and depth stated by that museum, not a claim that the snail is found at every location or depth throughout the region.
The Western Australian Museum’s Dampier Archipelago database records Syrinx aruanus at survey stations around Cape Legendre, Eaglehawk Island, Enderby Island, and Roly Rock. These are locality records in a regional database; they do not establish abundance or the present condition of local populations.
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What does it eat, and is it threatened?
The reviewed museum and government pages do not establish a species-specific diet, current conservation category, or population trend. The Dampier Archipelago page links a study titled “Food of giants: field observations on the diet of Syrinx aruanus” by John D. Taylor and Emily A. Glover, but the linked page does not provide the study’s findings.
An Australian Government report identified as a 2006 publication lists false trumpet or Australian trumpet among gastropods collected for food in its Northern Planning Area chapter. That is historical regional context only; it does not establish current harvesting, regulation, population pressure, or conservation status.
Quick Recap
Sources
- Western Australian Museum, “West Coast Marine Molluscs” — size and largest-gastropod statement.
- Queensland Museum, “Gastropods – Animals of Queensland” — shell length, range, and depth.
- Museums Victoria specimen F 326929 — spelling, taxonomic authority, common name, and collection locality.
- Western Australian Museum, Dampier Archipelago species page — survey-station records and reference to diet research.
- Australian Government, “Key Species – Northern Planning Area” — historical regional collection-for-food context.
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