References

DK Publishing, Inc. (2006) Ocean. New York: DK Pub.

http://animals.nationalgeographic.com/animals/invertebrates/common-octopus/

http://cephalove.southernfriedscience.com/?p=110

http://ehis.ebscohost.com/conn/node104/300986/www.credoreference.com/entry/ebconcise/octopus

http://theterramarproject.org/thedailycatch/an-octopus-has-3-hearts-9-brains-and-blue-blood/

http://universe-review.ca/R10-33-anatomy05.htm

http://youtu.be/I65Qlg04D3g