Extreme diving of beaked whales

@article{Tyack2006ExtremeDO,
  title={Extreme diving of beaked whales},
  author={Peter Lloyd Tyack and Mark Johnson and Natacha Aguilar de Soto and Albert Sturlese and Peter Teglberg Madsen},
  journal={Journal of Experimental Biology},
  year={2006},
  volume={209},
  pages={4238 - 4253}
}
SUMMARY Sound-and-orientation recording tags (DTAGs) were used to study 10 beaked whales of two poorly known species, Ziphius cavirostris (Zc) and Mesoplodon densirostris (Md). Acoustic behaviour in the deep foraging dives performed by both species (Zc: 28 dives by seven individuals; Md: 16 dives by three individuals) shows that they hunt by echolocation in deep water between 222 and 1885 m, attempting to capture about 30 prey/dive. This food source is so deep that the average foraging dives… 

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