Table 6.
Sightings and numbers of gray whales recorded during vessel surveys off northeast Sakhalin Island, 26 July–26 September 2003
| Survey period | Piltun | Offshore | Total | ||||||
|---|---|---|---|---|---|---|---|---|---|
| km | Sightings | Whales | km | Sightings | Whales | km | Sightings | Whales | |
| 26–31 July | 311 | 1 | 1 | 0 | 0 | 0 | 311 | 1 | 1 |
| 1–9 August | 299 | 12 | 21 | 382 | 45 | 83 | 681 | 57 | 104 |
| 10–19 August | 341 | 44 | 72 | 548 | 36 | 67 | 889 | 80 | 139 |
| 20–31 August | 358 | 81 | 135 | 285 | 34 | 71 | 643 | 115 | 206 |
| 1–13 September | 313 | 86 | 130 | 520 | 77 | 117 | 833 | 163 | 247 |
| 14–26 September | 212 | 36 | 48 | 0 | 0 | 0 | 212 | 36 | 48 |
| Total | 1834 | 260 | 407 | 1735 | 192 | 338 | 3569 | 452 | 745 |