Underwater Sounds of Arctocephalus Philippii, the Juan Fernández Fur Seal

  1. William Henry Burt
  1. Kenneth S. Norris1 and
  2. William A. Watkins2

Published Online: 3 APR 2013

DOI: 10.1029/AR018p0169

Antarctic Pinnipedia

Antarctic Pinnipedia

How to Cite

Norris, K. S. and Watkins, W. A. (1971) Underwater Sounds of Arctocephalus Philippii, the Juan Fernández Fur Seal, in Antarctic Pinnipedia (ed W. H. Burt), American Geophysical Union, Washington, D. C.. doi: 10.1029/AR018p0169

Author Information

  1. 1

    Oceanic Institute, Makapuu Oceanic Center, Wainianalo, Hawaii 96795

  2. 2

    Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543

Publication History

  1. Published Online: 3 APR 2013
  2. Published Print: 1 JAN 1971

ISBN Information

Print ISBN: 9780875901183

Online ISBN: 9781118664773



  • Arctocephalus philippii;
  • Fur seal;
  • Harmonics;
  • Oscillographic pattern;
  • Spectrographic analysis;
  • Stereotyped low-frequency pulses;
  • Underwater sounds


Sounds heard from Arctocephalus philippii, the Juan Fernández fur seal, at Isla Róbinson Crusoe included moans and snarls in air, and stereotyped low-frequency pulse series under water. Analyses of the underwater sounds show that the individual pulses started at 150 to 200 Hz and swept downward in frequency 5 to 50 Hz. The series were composed of 17 to 43 pulses and were produced at a rate of about 3 per sec.