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Table 1 Description of animals involved in this study, denoting animal ID, recording location

From: Eavesdropping on the brain at sea: development of a surface-mounted system to detect weak electrophysiological signals from wild animals

# Location Age class and estimate (yrs) Sex Length (cm) Girth (cm) Mass (kg) Phase Recording type Recording duration (hrs)
1 TMMC Weanling (0,1] M 161 43.0 1 Euthanasia; deemed unreleasable  < 1 h
2 TMMC Weanling (0,1] F 115 26.5 1 Euthanasia; deemed unreleasable  < 1 h
3 TMMC Weanling (0,1] F 138 57.0 1 Release Exam  < 1 h
4 TMMC Weanling (0,1] M 128 61.0 1 Release Exam  < 1 h
5 TMMC Weanling (0,1] F 147 63.5 1 Release Exam  < 1 h
6 TMMC Weanling (0,1] F 139 52.5 1 Release Exam  < 1 h
7 TMMC Weanling (0,1] F 137 50.5 1 Release Exam  < 1 h
8 TMMC Weanling (0,1] F 138 55.5 1 Release Exam  < 1 h
9 TMMC Weanling (0,1] M 146 57.0 1 Release Exam  < 1 h
10 TMMC Weanling (0,1] M 141 74.5 1 Release Exam  < 1 h
11 TMMC Weanling (0,1] F 130 54.5 1 Release Exam  < 1 h
12 LML Yearling (0,1] F 152 132 118 2a / V1 Captive Deployment 81.86 h
13 LML Yearling (0,1] F 165 139 148 2a / V2 Captive Deployment 79.71 h
14 LML Juvenile (1,2] F 188 124 141 2a / V2 Captive Deployment 116.85 h
15 LML Juvenile (1,2] F 206 147 196 2a / V2 Captive Deployment 115.86 h
16 LML Juvenile (1,2] F 206 129 177 2a / V2 Captive Deployment 69.62 h
17 ANO Weanling (0,1] F 165 143 200 2b / V2 Wild Deployment 73.81 h
18 ANO Weanling (0,1] F 157 130 116 2b / V3 Wild Deployment 120.90 h
19 ANO Weanling (0,1] F 151 129 118 2b / V3 Wild Deployment 120.04 h
20 ANO Juvenile (1,2] F 170 140 157 2b / V3 Wild Deployment 119.19 h
21 ANO Juvenile (2,3] F 187 102  ~ 120 2b / V2 Wild Deployment 75.16 h
22 ANO Juvenile (2,3] F 177 134 154 2b / V3 Wild Deployment 98.81 h
Phase 1 total (N = 11) 1 Stationary Recordings (TMMC)  < 12 h
Phase 2A total (N = 5) 2a Captive Deployments (LML) 464 h (19.3 d)
Phase 2B total (N = 6) 2b Wild Deployments (ANO) 608 h (25.3 d)
  1. TMMC: The Marine Mammal Center, LML: Long Marine Lab, and ANO: Año Nuevo State Park), age class and age estimate in years (weanling (post-nursing): 1–6 months, yearling: 6–12 months, juvenile: 1–3 years old), sex (determined visually as male [M] or female [F]), standard length (cm), axillary girth (cm), mass (in kilograms), study phase and tag design iteration (V1/V2/V3), type of recording (during euthanasia or release exam procedure (at TMMC) or deployment in captivity or the wild), and the total recording duration in hours (h) and days (d)