Maoricrypta costata

About this species

Maoricrypta costata, or the Ribbed Slipper Shell, is a species of intertidal medium-sized sea snail, a marine gastropod mollusc in the family Calyptraeidae.

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

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

January: 34 records
February: 26 records
March: 44 records
April: 32 records
May: 15 records
June: 17 records
July: 35 records
August: 25 records
September: 36 records
October: 34 records
November: 9 records
December: 23 records

Depth and water temperature

Depth

Mostly recorded at 0–50 m · Deepest record: 77 m

0–10 m: 14 records
10–20 m: 4 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: 1 records

Water temperature

Recorded in surface water of 15–26 °C

14–16 °C: 3 records
16–18 °C: 52 records
18–20 °C: 1 records
20–22 °C: 0 records
22–24 °C: 0 records
24–26 °C: 1 records

Photos

(c) Javier, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Javier, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Debra Baker, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Samuel Brown, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Samuel Brown, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Debra Baker, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Saryu Mae 前朝琉, some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

Other scientific names: Crepidula costata, Crepidula lineolata

Similar species

Slipper Limpet
Maoricrypta immersa
Maoricrypta monoxyla
Maoricrypta sodalis
Spiny Slipper Shell
Bostrycapulus aculeatus
Onyx slippersnail
Crepidula onyx
Bostrycapulus gravispinosus

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).
372 open-data records from 1912 to 2013.
Species data updated November 4, 2026.