Echinolittorina hawaiiensis

About this species

Echinolittorina hawaiiensis or Hawaiian Periwinkle is a marine gastropod mollusk in the family Littorinidae. It is endemic to Hawaii and is mostly found in clusters on rocky shores in the high intertidal.

Text from the Wikipedia article “Echinolittorina hawaiiensis”, 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: 10 records
February: 16 records
March: 16 records
April: 19 records
May: 34 records
June: 26 records
July: 24 records
August: 20 records
September: 23 records
October: 17 records
November: 15 records
December: 14 records

Depth and water temperature

Water temperature

Recorded in surface water of 25–26 °C

24–26 °C: 23 records

Photos

(c) Tyler Bishop, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Neal Kelso, some rights reserved (CC BY) · CC BY · iNaturalist
(c) florawhite, some rights reserved (CC BY) · CC BY · iNaturalist
(c) David Anderson, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Lexi Amico, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Jason Grant, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Nick T., some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist

Names and classification

Other scientific names: Echinolittorina (Granulilittorina) hawaiiensis, Litorina picta, Littorina picta, Nodilittorina (Granulilittorina) hawaiiensis, Nodilittorina hawaiiensis

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).
84 open-data records from 1914 to 1976.
Species data updated November 2, 2026.