https://www.montereybayaquarium.org/animals-and-exhibits/animal-guide/octopuses-and-kin

https://www.montereybayaquarium.org/animals-and-exhibits/exhibits/giant-octopus

http://ipfactly.com/15-interesting-facts-octopus-kids/

http://idahoptv.org/sciencetrek/topics/oceans/facts.cfm