Table 1.
Summary of morphometrics and foraging behavior of northern elephant seals in this study
| Seal ID | Days at sea | Body mass at departure (kg) | Body mass at arrival (kg) | Mean body mass (kg) | Body mass gain (kg) | Mean standard body length (cm) | Total no. of JME | No. of JME/day | No. of foraging dives | No. of none and miscellaneous foraging dives | Loggers |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1015 | 73.4 | 319.0 | 389.0 | 354.0 | 70.0 | 262.5 | 167,868 | 2,287.04 | 4,178 | 435 | JMER, SSR |
| 3236 | 72.2 | 308.2 | Not scaled | 256.5 | 123,027 | 1,705.01 | 4,264 | 586 | JMER | ||
| T35 | 74.6 | 340.7 | 426.7 | 383.7 | 86.0 | 263.5 | 94,599 | 1,267.71 | 3,227 | 549 | JMER, SSR |
| 2024 | 81.1 | 297.2 | 396.9 | 347.1 | 99.7 | 253.0 | 107,861 | 1,329.63 | 4,017 | 950 | JMER |
| R382 | 68.4 | 432.3 | 499.5 | 465.9 | 67.1 | 291.5 | 69,715 | 1,019.67 | 2,988 | 757 | JMER, SSR |
| U239 | 69.3 | 331.5 | 408.1 | 369.8 | 76.6 | 262.0 | 136,665 | 1,970.74 | 3,359 | 612 | JMER |
| U954 | 70.8 | 256.0 | 337.0 | 296.5 | 81.0 | 242.5 | 136,983 | 1,934.61 | 3,632 | 692 | JMER, SSR |
| 18129 | 75.4 | 345.8 | 468.0 | 406.9 | 122.2 | 266.5 | 126,113 | 1,672.78 | 3,757 | 803 | JMER |
| U256 | 60.6 | 357.0 | 432.8 | 394.9 | 75.8 | 273.0 | 90,836 | 1,499.36 | 2,523 | 865 | JMER |
| U754 | 65.7 | 332.7 | 402.5 | 367.6 | 69.9 | 265.0 | 90,836 | 1,382.53 | 3,176 | 332 | JMER |
| U848 | 80.1 | 352.0 | 436.8 | 394.4 | 84.8 | 274.0 | 100,135 | 1,249.38 | 3,401 | 771 | JMER |
| X334 | 66.9 | 302.0 | Not scaled | 262.5 | 106,125 | 1,586.88 | 2,998 | 1,133 | JMER | ||
| X349 | 79.0 | 314.1 | 369.3 | 341.7 | 55.2 | 257.0 | 119,226 | 1,509.64 | 3,546 | 1,118 | JMER |
| X387 | 72.5 | 307.1 | 391.5 | 349.3 | 84.3 | 267.0 | 101,769 | 1,404.34 | 3,496 | 840 | JMER, VRa |
| 2161 | 45.7 | 458.9 | 502.8 | 480.9 | 43.9 | 288.0 | JMERb, VR | ||||
| Avg | 70.4 | 337.0 | 420.1 | 381.0 | 78.2 | 265.6 | 112,268 | 1,559 | 3,469 | 746 |
JMER, jaw motion event recorder; SSR, swim stroke recorder; VR, video recorder.
a
Unsuccessful.
b
Malfunction.