Table 1.
Tracking summary information of three western gray whales instrumented with satellite-monitored radio tags off Sakhalin Island, Russia.
| whale | tracking segment | start date | end date | distance km (nmi) | days | speed km h−1 (nmi h−1) |
|---|---|---|---|---|---|---|
| Flex | feeding | 4 Oct 2010 | 10 Dec 2010 | 938 (506) | 68.0 | 0.6 (0.31) |
| Agent | 28 Aug 2011 | 24 Nov 2011 | 2600 (1403) | 88.7 | 1.2 (0.66) | |
| Varvara | 31 Aug 2011 | 24 Nov 2011 | 1280 (691) | 84.2 | 0.6 (0.34) | |
| Flex | southeast migration | 10 Dec 2010 | 5 Feb 2011 | 7661 (4137) | 56.1 | 5.7 (3.1) |
| Agent | 24 Nov 2011 | 31 Dec 2011 | 5464 (2950) | 36.3 | 6.3 (3.4) | |
| Varvara | 24 Nov 2011 | 2 Feb 2012 | 10 880 (5875) | 69.5 | 6.5 (3.5) | |
| Varvara | reproductive areas (end of migration—Ojo de Liebre) | 2 Feb 2012 | 26 Feb 2012 | 1147 (619) | 24.0 | 2.0 (1.1) |
| Varvara | northwest migration | 26 Feb 2012 | 14 May 2012 | 10 484 (5661) | 78.8 | 5.5 (3.0) |