Bentharca asperula

Molluscs
IUCN: Not evaluated

Usual depth1,225–4,680 m
Water temperature6–29 °C
Best monthsOctober
How commonRare

All species

Where and when

Where it has been recorded

Worldwide

Loading the map

Best months

Worldwide (open data)

January: 1 records
February: 6 records
March: 1 records
April: 3 records
May: 7 records
June: 1 records
July: 4 records
August: 2 records
September: 5 records
October: 19 records
November: 5 records
December: 3 records

Depth and water temperature

Depth

Mostly recorded at 1,225–4,680 m · Deepest record: 5,219.5 m

60–70 m: 1 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
120–130 m: 0 records
130–140 m: 0 records
140–150 m: 0 records
150–160 m: 0 records
160–170 m: 0 records
170+ m: 90 records

Water temperature

Recorded in surface water of 6–29 °C

4–6 °C: 2 records
6–8 °C: 3 records
8–10 °C: 1 records
10–12 °C: 0 records
12–14 °C: 2 records
14–16 °C: 0 records
16–18 °C: 8 records
18–20 °C: 11 records
20–22 °C: 5 records
22–24 °C: 31 records
24–26 °C: 25 records
26–28 °C: 42 records
28–30 °C: 17 records

Names and classification

Names in 1 more languages

Japanese: ワダツミフネガイ

Other scientific names: Acar asperula, Arca (Barbatia) pteroessa, Arca (Cucullaria) endemica, Arca (Scapharca) culebrensis, Arca culebrensis, Arca endemica, Arca paserula, Arca profundicola, Arca pteroessa, Bathyarca profundicola, Bentharca hawaiensis, Macrodon asperula, Okinawanoarca ligamentaria

Similar species

Divaricated Ark
Acar plicata
Antique ark
Anadara antiquata
Indo-Pacific Ark
Arca navicularis
Burnt-almond ark
Barbatia amygdalumtostum
Anadara cornea
Anadara pilula

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.
Conservation status as published by GBIF (IUCN Red List).
171 open-data records from 1884 to 2015.
Species data updated October 26, 2026.

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