Table 1.
Biological information of individuals. Individuals under human care for over 12 years or born in the aquarium were used in this study. Body length and girth were measured at the end of October in 2019. Body mass was estimated from the body length and girth based on Tobayama & Kirihata [11]. All individuals were adults except for ID gg_rm (juvenile).
| species | ID | sex | body length (cm) | girth (cm) | body mass (kg) | estimated age (years) | display periods (years) |
|---|---|---|---|---|---|---|---|
| false killer whale | pc_km | M | 426 | 196 | 599 | 15 | 13 |
| Risso's dolphin | gg_sm | M | 302 | 157 | 334 | 24 | 19 |
| gg_mf | F | 298 | 152 | 312 | 24 | 15 | |
| gg_nf | F | 286 | 167 | 342 | 16 | 12 | |
| gg_rm | M | 270 | 142 | 246 | 5a | 5 |
aThe age was known.