572 



Fishery Bulletin 101(3) 



Washington yearlings 



21106 max depth 



14085 max depth 



350 

 300 

 250 



200- 

 150- 

 100 

 50 • 



11 21 31 



Days with maximum depth (m) per 24-h reception 

 21103 max depth 



Days with maximum depth (m) per 24-h reception 



14087 max depth 



350 

 300 

 250- 



200 

 150 

 100 

 50- 



Days with maximum depth (m) per 24-h reception 



14089 max depth 



11 21 31 41 51 



Days with maximum depth (m) per 24-h reception 



350 

 300 

 250 

 200 

 150 

 100 

 50 



1 11 21 31 ■ll 



Days with maximum depth (m) per 24-h reception 



Figure 3 



Summaries of the maximum depth (m) for each 24-h period (O) m which a status message containing maximum depth informa- 

 tion was received by the Argos satellite for 13 of the 25 SDR-cquipped Steller sea lions. For example, the Argos satellite received 

 a status message from SDR 21 106 for about 44 days, yet the SDR was operational for a total of 83 days (A; see Table 1 ). These 13 

 were chosen to compare yearlings of comparable age in Washington (A), and Alaska (B), and to provide typical examples of Alaska 

 young-of-the-year (C). 



<l-447.3 km; median=4.2 km). For sea lions slO months of 

 age, the mean distance of all trips was 7.0 km (n=257 trips; 

 range=0. 1-260.7 km; SD=19.0 km; mcdian=2.7 km) (Fig. 8); 

 for sea lions >10 months of age, the mean distance of all 

 tripswas24.6km(«=307;range:<l-447.3km;SD=57.2km; 

 median=5.6 km) (Fig. 8). Averaged across individual ani- 



mals, the mean distance of trips at sea ranged between 2.3 

 and 55.6 km; for the younger animals this range was 4-17 km 

 and 2-55 km for the older animals. The repeated-measures 

 ANOVA on the logarithm of trip distance showed that the 

 older sea lions traveled significantly farther (P<0.001) 

 than younger animals and that there were neither signifi- 



