Table 1 Main characteristics (mean ± standard deviation) of topshells and activities according to site and size
| Â | New Caledonia | Vanuatu | ||||
|---|---|---|---|---|---|---|
| Â | Total | Large | Small | Total | Large | Small |
Specimens | ||||||
N Topshell | 10 | 9 | 1 | 8 | 4 | 4 |
Bd |  | 120; 121.6 | 72.1 | 108.9 ± 25.9 | 132.3 ± 9.2 | 85.5 ± 5.1 |
Activity (per specimen) | ||||||
24-h | 414 ± 101 | 335 ± 85 | 484 ± 94 | 443 ± 151 | 327 ± 118 | 560 ± 66 |
Night | 393 ± 98 | 319 ± 85 | 449 ± 99 | 429 ± 145 | 320 ± 119 | 539 ± 60 |
Dawn | 1 ± 3 | 0 ± 1 | 2 ± 2 | 2 ± 5 | 0 ± 1 | 4 ± 6 |
Day | 7 ± 11 | 5 ± 7 | 15 ± 13 | 9 ± 13 | 5 ± 4 | 14 ± 17 |
Dusk | 13 ± 6 | 10 ± 5 | 17 ± 7 | 1 ± 2 | 2 ± 3 | 1 ± 2 |
Movement duration (min) | ||||||
D/ 24-hour | 131 ± 50 | 89 ± 25 | 188 ± 54 | 178 ± 103 | 88 ± 38 | 269 ± 53 |