Sources
"Communication with Submarines." Wikipedia: The Free Encyclopedia. Wikimedia Foundation, Inc. 10 November 2010. Web. 23 November 2010.
<http://en.wikipedia.org/wiki/Communication_with_submarines>
"Extremely Low Frequency Transmitter Site Clam Lake, Wisconsin." US Navy Fact File. 28 June 2001. Web. 23 November 2010
<http://www.fas.org/nuke/guide/usa/c3i/fs_clam_lake_elf2003.pdf>
GlobalSecurity.org: Reliable Security Information. John Pike. 5 September 2008. Global Security.org. 24 November 2010. <http://www.globalsecurity.org/military/systems/ship/sub-comm.htm>
"How is sounds used to transmit data underwater?". University of Maryland. 2003-2008. 24 November 2010.
<http://www.dosits.org/people/communications/transmitdataunderwater/>
KFC. "How Neutrinos Could Revolutionize Communications with Submarines" Technology Review. Jason Pontin. 5 October 2009.
MIT. 23 November 2010. <http://www.technologyreview.com/blog/arxiv/24203/>.
Naval Technology. Net Resources International. 2010. Net Resources International.
23 November 2010 <http://www.naval-technology.com/projects/astute/astute8.html.>
Stojanovic, Milica. "Underwater Acoustic Communications:Design Considerations on the Physical Layer." Massachusetts Institute of Technology. Web. 24 November 2010. <http://www.mit.edu/~millitsa/resources/pdfs/garmisch.pdf.pdf>
Image on Disadvantages of the Underwater Telephone page is from
http://www.goatravelmasti.com/images/Scuba_Diving_Corals%20%28Custom%29.jpg
Accessed on November 24, 2010
MP3 sound effect on the Introduction page was found on http://www.atcbox.com/