Low-frequency sonar raises whale advocates' hackles
http://www.cnn.com/NATURE/9906/30/sea.noise.part1/


Protecting Whales from Dangerous Sonar
http://www.nrdc.org/wildlife/marine/nlfa.asp


Military Sonar May Give Whales the Bends, Study Says
http://news.nationalgeographic.com/news/2003/10/1008_031008_whalebends.html


U.S. Navy Asks to be Exempted from Federal Law Forbidding Harassment or Killing of Whales
http://www.mindfully.org/Heritage/Navy-Killing-Whales.htm