Least Concern· population trend unknown· assessed 2018

Spinner Dolphin

Stenella longirostris

Sighting evidence at Electric Beach, Oahu

Photo: Craig Fujii · CC BY-NC-ND

Pods of 20 to 200 spinner dolphins use the warm outflow at Electric Beach as a rest and socialisation area after nighttime feeding forays in offshore deep water. They are wild animals following natural rest cycles, and interactions are best observed passively — approaching too closely disrupts their rest, which is why conservation guidelines strongly encourage drift-watching over active pursuit.

Evidence at this site

22 records within 25 km

Confidence: medium

Last confirmed Jun 2026

Seasonality

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How is this calculated?

Sighting evidence is compiled from iNaturalist observation records within a set proximity radius, filtered for quality-grade observations. “Last confirmed” is the date of the most recent research-grade record. Record count covers a rolling 24-month window. Confidence reflects record count, recency, and consistency of seasonal signal.

Spinner Dolphin

Evidence at this site

Seasonality

Also seen at other sites