Table 1.
Exposure limits of cetacean species commonly exhibited under managed-care, including high-frequency (HF) and very-high-frequency (VHF) groups. Proposed sound exposure limits are weighted auditory frequency, expressed as dB re 1 μPa2s, and adapted from Southall et al. (2019). Additional species thresholds and auditory weighting information is available in main text.
| Species | Frequency Group | Type I Sounds (dB re 1 μPa2s) |
Other Sounds (dB re 1 μPa2s) |
||
|---|---|---|---|---|---|
| TTS | PTS | TTS | PTS | ||
| Cephalorhynchus commersonii | VHF | 140 | 155 | 153 | 173 |
| Delphinapterus leucas | HF | 170 | 185 | 178 | 198 |
| Globicephala macrorhynchus | HF | 170 | 185 | 178 | 198 |
| Lagenorhynchus obliquidens | HF | 170 | 185 | 178 | 198 |
| Orcinus orca | HF | 170 | 185 | 178 | 198 |
| Phocoena phocoena | VHF | 140 | 155 | 153 | 173 |
| Steno bredanensis | HF | 170 | 185 | 178 | 198 |
| Tursiops truncatus | HF | 170 | 185 | 178 | 198 |