| PodCode | Region | EstimatedSize | FirstRecordedDate |
|---|---|---|---|
| P-ORC01 | North Pacific | 18 | 2012-05-14 |
| P-ORC02 | North Atlantic | 9 | 2015-11-03 |
| P-ORC03 | Southern Ocean | 24 | 2018-02-22 |
| SightingID | PodCode | SightingDate | Latitude | Longitude |
|---|---|---|---|---|
| S7001 | P-ORC01 | 2024-03-12 | 48.375 | -123.120 |
| S7002 | P-ORC03 | 2024-03-15 | -64.210 | -60.450 |
| S7003 | P-ORC01 | 2024-03-18 | 49.100 | -122.900 |
| S7004 | P-ORC02 | 2024-03-20 | 64.150 | -21.900 |
State the name of the field from the Sighting table that acts as a foreign key.