references

 
http://www.youtube.com/watch?v=Nw1LmewgCZE accessed on the 3/12/2014  
 

http://www.youtube.com/watch?v=E7xTV_UUEXI  accessed on the 3/12/2014
 

http://en.wikipedia.org/wiki/Walrus accessed on the 5/11/2014

This website was published on the 2/12/2014   (on Weebly)