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Blue-ringed Octopus

Page history last edited by Avery A 12 years, 9 months ago

                                              Blue-ringed Octopus


By: Avery 






 Here is a video about the blue-ringed octopus, that will help you learn more:  





  •  The blue ringed octopus is relativly small and are one of the world's most poisonous creature.


  •  A blue-ringed octopus has blue and black rings and yellowish skin. 


  •    It is comprised of 8 legs and is only about 20cm long with its tentacles spread out very wide. 


  •    The blue ringed octopus is classified in the mullusk family.


  •    Like octopuses ,if an arm is lost, it can be regenerated.










 The blue-ringed octopus can be found only in the temparature waters of southern Australia, from southern and western Australia to eastern Victoria at dephts ranging to about 0-50m. Blue-ringed octopus can be also found in shallow reefs and tide pools from Northern Australia to Japan, including Papua New Guinea, Solomon Islands, Philippines, and Indonesia and as far west as Sri Lanka, at depths ranging from 0-20.




        Predator  Adaptions


  • The diet of a blue-ringed octopus consists of mainly of small crabs, shrimp, but they also feed on fish if they can catch them.
  • They pounce on their prey, paralyze them with venom, and use their beaks to tear off peices.
  • They usualluy feed off of crustaceans exoskeleton.
  • When it's prey is at distance, the blue-rimnged octopus can even squirt the venom through the water to attack it's prey.
  • The blue-ringed octopus mainly hunt during the daytime. 


      Prey Adaptions


  • To avoid getting eaten by other underwater species, the blue-ringed octopus paralyzes their prey with venom. 
  • Because of it's venom, no animal will try to eat it. 



       Symbiotic reactions


The blue-ringed octopus has a mutualisic relationship with it's coral. The main reason for the coral has a mutualistic relationship with the blue-ringed octopus is because a coral reef holds different species that the blue-ringed octopus eats. If by any chance the blue-ringed octopus did npt eat the fish neer the coral reef, the reef would overflow witrh fish.


Species Comparison: Squid




  • Both the squid and octopi live in warm, tropical salt-water.
  • They are both part of the class mulluscs called cephalopods.  




  • Squid have two tentacles and eight arms, and octopusses just have eight arms. 
  • Squid eat crustaceans and fish,octopi just eat crustaceans.
  • Octopi live in dens on the sea floor, whereas,squid live out in open water.
  • Octopi can only grow up to 5m long, the blue-ringed octopus can only grow to 20cm long, and the squid can grow up to 20m long.



                Resources: Where we live. 2002. Winnipeg Botanical Society. 24 May 2005.


Montreal. 2010. Did you know? Febuary 17 2010.  



Montreal.2010. Great Barrier Reef, Australia. Febuary, 16 2010.  



Montreal. 2010. Enmchanted Learning, blue-rimnged octopus. Febuary, 19 2010.  


Montreal.  2010. Oceanimages. Febuary, 16 2010.



 Montreal. 2010. image quest. febuary, 21 2010.


Montreal. 2010. Squidoo- Blue-ringed octopus. Febuary, 23 2010.



























































Comments (3)

Sevy Swift said

at 11:47 am on Feb 16, 2010

Where's your description

Oonagh McDowell said

at 5:57 pm on Feb 17, 2010

i added your link to my webpage

Hugh H said

at 6:46 pm on Feb 22, 2010


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