Purple Mottled Shore Crab

About this species

Cyclograpsus granulosus, the purple mottled shore crab or smooth shore crab, is an Australasian crab species.

Text from the Wikipedia article “Cyclograpsus granulosus”, 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: 11 records
February: 17 records
March: 13 records
April: 19 records
May: 12 records
June: 10 records
July: 10 records
August: 6 records
September: 10 records
October: 16 records
November: 13 records
December: 9 records

Depth and water temperature

Depth

Mostly recorded at 4–16 m · Deepest record: 16 m

0–10 m: 2 records
10–20 m: 2 records

Water temperature

Recorded in surface water of 11–23 °C

10–12 °C: 1 records
12–14 °C: 1 records
14–16 °C: 75 records
16–18 °C: 11 records
18–20 °C: 3 records
20–22 °C: 0 records
22–24 °C: 1 records

Photos

(c) Peter Crowcroft, some rights reserved (CC BY) · CC BY · iNaturalist
(c) ttsquid, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Peter Crowcroft, some rights reserved (CC BY) · CC BY · iNaturalist
(c) ttsquid, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Bee, some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

English: Purple Mottled Shore Crab

Similar species

Smooth Shore Crab
Cyclograpsus lavauxi
Smooth Shore Crab
Cyclograpsus audouinii
Cyclograpsus insularum
Globose shore crab
Cyclograpsus integer
Cyclograpsus intermedius
Cyclograpsus longipes

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).
206 open-data records from 1900 to 2019.
Species data updated November 1, 2026.