scubaseason

Atlantic Spotted Dolphin

Stenella frontalis

Sighting evidence at Speery Island Pinnacles, Saint Helena Island

Atlantic spotted dolphins use the Speery pinnacle chain as a hunting ground, herding small fish against the rocky topography in coordinated ambush attacks that divers can observe at close range. The species is characteristically bold, regularly joining divers mid-dive and mimicking their fin kicks in a behaviour researchers interpret as play or social learning. Saint Helena's population is resident rather than migratory, giving it a degree of habituation to the island's dive boats that makes encounters here more reliable and extended than most Atlantic dolphin dive experiences.

Evidence at this site

No confirmed records on file at this site

Atlantic Spotted Dolphin is listed as a curated species here based on historical reports.

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.

Also seen at other sites