Scientists mystified by largest dolphin stranding in northeast U.S. in 20 years

More dolphin strandings are expected after 129 beached themselves on Cape Cod in the last three weeks, with 92 dying in "the single largest stranding" of dolphins in the Northeast since at least 1999, the International Fund for Animal Welfare reported Monday.


See article:
 http://usnews.msnbc.msn.com/_news/2012/02/06/10331137-cape-cod-dolphin-beachings-rise-to-129-more-expected


Why are we seeing these migratory issues in Animals? Here are a few ideas I have seen:




Option A) 
Animals use the magnetic field like we do the Global Positioning                            System
http://www.pbs.org/wgbh/nova/nature/magnetic-impact-on-animals.html


Option B) 

Modern ecosystems feel ancient climate change effect

http://www.physorg.com/news/2011-10-modern-ecosystems-ancient-climate-effect.html

Option C)

Might Navy Sonar Affect Hearing of Whales and Other Marine Animals?

http://www.sciencedaily.com/releases/2009/11/091124113608.htm

Image : http://www.flickriver.com/photos/winemakerssister/317949952/