Sargasso Shearwater has been seen by:
| Birder | Location | Town | County | Date |
|---|---|---|---|---|
| Paul L'Etoile | Block Canyon | Pelagic | Offshore | 16-Sep-2019 |
| Wayne Munns | Offshore pelagic | Pelagic | Offshore | 16-Sep-2019 |
| Carlos Pedro | Block Canyon | Pelagic | Offshore | 16-Sep-2019 |
| Birder | Location | Town | County | Date |
|---|---|---|---|---|
| Paul L'Etoile | Block Canyon | Pelagic | Offshore | 16-Sep-2019 |
| Wayne Munns | Offshore pelagic | Pelagic | Offshore | 16-Sep-2019 |
| Carlos Pedro | Block Canyon | Pelagic | Offshore | 16-Sep-2019 |