Scatter plots showing the relationship of dive duration to dive depth in five deep-diving odontocete species.

<p>Dive duration generally increased as a function of dive depth in this study. However, different functional forms ranging from exponential (<i>Globicephala macrorhynchus</i>), to power law (<i>Peponocephala electra</i> and <i>Physeter macrocephalus</i>), to linear (<i>Mesoplodon densirostris</i> and <i>Ziphius cavirostris</i>) provided the best model fits in different species. Greater variation in dive duration of deeper dives was observed particularly among the beaked whales.