Oregon mammals

Pacific White-sided Dolphin in Oregon

Sagmatias obliquidens

Native to Oregon

Not listed as nonindigenous in Oregon by USGS NAS; native to its Oregon range.

IUCN Red List status

NE – Not Evaluated

Not yet assessed against IUCN Red List criteria.

Pacific White-sided Dolphin in Oregon, by the numbers

Rare in Oregon 171st most recorded of 178 mammals logged in Oregon

Records from 2000–2026.

Seasonality

No dated Oregon records from 2000 to 2026.

Pacific white-sided dolphins are regulars off Oregon that leave almost no paper trail. No dated Oregon record from 2000 through 2026 turns up in iNaturalist or GBIF, which fits an animal that spends most of its life miles offshore, out over the continental shelf.

Sightings depend on boats, weather, and luck, and a stormy winter keeps observers ashore even when dolphins are present. An empty record measures attention, not absence.

As a marine mammal, the dolphin carries no meaningful state conservation rank, and the IUCN hasn’t evaluated the species at all. The animals seen off Oregon belong to a wide-ranging North Pacific population that rarely comes close enough to shore for a casual observer to log.

Occurrence data from GBIF.

More mammals in Oregon in the atlas

Data & sources

The data and visualizations on this page draw on these open sources:

  • GBIFCC-BY 4.0occurrence records behind the range map, elevation, and record counts
  • iNaturalistCC0 / CC-BY / CC-BY-SAobservations, photos, and audio recordings
  • NatureServe ExplorerCC-BYthe state conservation rank
  • IUCN Red Listattributed factthe global conservation status
  • USGS NASpublic domainnative / introduced status