Straw Tun

Eudolium crosseanum

Molluscs
IUCN: Not evaluated

Usual depth183–484 m
Water temperature18–30 °C
Best monthsMay, October, and November
How commonRare

Photo credit: (c) Javier, some rights reserved (CC BY), uploaded by Javier · CC BY · iNaturalist

About this species

Eudolium crosseanum is a species of large sea snail, a marine gastropod mollusk in the family Tonnidae, the tun shells. It was first described as Dolium crosseanum in 1869 by Dolium crosseanum Tommaso Di Maria Allery Monterosato, but was transferred to the genus, Eudolium, in 1992 by Bruce A. Marshall.

Text from the Wikipedia article “Eudolium crosseanum”, licensed CC BY-SA 4.0. Read the article

Where and when

Where it has been recorded

Worldwide

Loading the map

Best months

Worldwide (open data)

January: 3 records
February: 1 records
March: 0 records
April: 4 records
May: 12 records
June: 2 records
July: 3 records
August: 2 records
September: 1 records
October: 13 records
November: 8 records
December: 8 records

Depth and water temperature

Depth

Mostly recorded at 183–484 m · Deepest record: 1,769 m

10–20 m: 1 records
20–30 m: 0 records
30–40 m: 1 records
40–50 m: 0 records
50–60 m: 2 records
60–70 m: 0 records
70–80 m: 0 records
80–90 m: 0 records
90–100 m: 0 records
100–110 m: 0 records
110–120 m: 0 records
120+ m: 52 records

Water temperature

Recorded in surface water of 18–30 °C

16–18 °C: 2 records
18–20 °C: 1 records
20–22 °C: 11 records
22–24 °C: 7 records
24–26 °C: 18 records
26–28 °C: 31 records
28–30 °C: 13 records

Photos

Names and classification

English: Straw Tun, Thompson's false tun

Names in 1 more languages

Japanese: ナシガタミヤシロガイ

Other scientific names: Cassidaria javana, Doliopsis crosseana, Dolium (Eudolium) crosseanum, Dolium (Eudolium) pyriforme, Dolium crosseanum, Dolium pyriforme, Eudolium javanum, Eudolium pyriforme, Eudolium thompsoni, Galeodea javana, Tonna (Eudolium) crosseana, Tonna (Eudolium) pyriformis, Tonna (Eudolium) thompsoni, Tonna pyriformis

Similar species

Sources and credits

Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).

Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
Conservation status as published by GBIF (IUCN Red List).
188 open-data records from 1957 to 2005.
Species data updated November 2, 2026.

Log what you see on your next dive

The free DiveHive diver app keeps your logbook with every sighting and shows what lives at the site you dive next.

Join the waitlist