Extreme dives by free-ranging emperor penguins

@article{Wienecke2006ExtremeDB,
  title={Extreme dives by free-ranging emperor penguins},
  author={Barbara C Wienecke and Graham Robertson and Roger Kirkwood and Kieran Lawton},
  journal={Polar Biology},
  year={2006},
  volume={30},
  pages={133-142}
}
We examined the incidence of extreme diving in a 3-year overwintering study of emperor penguins Aptenodytes forsteri in East Antarctica. We defined extreme dives as very deep (> 400 m) and/or very long (> 12 min). Of 137364 dives recorded by 93 penguins 264 dives reached depths > 400 m and 48 lasted > 12 min. Most (65%) very long dives occurred in winter (May–August) while 83% of the very deep dives took place in spring (September–November). The two most extreme dives (564 m depth, 21.8 min… Expand

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