Diving behaviour of Cuvier's beaked whales (<i>Ziphius cavirostris</i>) off Cape Hatteras, North Carolina.

Surface durations of 2 s ( n = 12, 0.2%) were probably under-representations due to the conductivity sensor occasionally not getting dry at the surface (see Material and methods: Error checks for more detail). The result of the Kruskal–Wallis test was highly significant ( p < 0.001), and post hoc Dunn tests showed that all categories were significantly different from each other.

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