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Blue-ring Octopus

Page history last edited by hallie wiltzer 8 years, 11 months ago

Blue-ringed octopus page by Hallie Wiltzer

 

Description:

 There are over ten species of the blue ringed octopus. The blue ring octopus lives in tide pools and coral reefs in the Pacific and Indian Ocean. They are one the most venomous marine animals and they are only the size of a golf ball. However, they are very dangerous. They hunt for small crabs, such as the horseshoe crab and shrimp using their powerful venom and they may bite or attack humans if approached. When they are alarmed, their blue rings begin to darken; there are over fifty blue rings. When they rest, their skin is yellow and their blue rings turn brown. The blue ringed octopus spends its days hiding in crevices or under rocks. People rarely come in contact with them because they are so dangerous. At night, they attack smaller fish and crabs with their paralyzing venom. When bitten by a blue ringed octopus, you can experience muscle freezing, loss of sight and loss of hearing.

 

Habitat:

The blue ring octopus lives in tide pools and coral reefs in the Pacific and Indian Ocean and can be found along the coast of Australia. Blue ringed octopi spend their days hiding in crevices or under rocks.

 

Predator Adaptations:

Blue ringed octopi have a very powerful and poisonous venom that can scare and protect them from their predators. They spend most of their days hiding from their predators under rocks and come out at night to prey. The most widely known predator of the blue ringed octopi is the moray eel. The moray eel search coral reefs for the blue ringed octopi as they live in similar settings. Other predators include seals, whales and quite a few different birds.

 

Prey Adaptations:

Blue ringed octopi use their paralyzing venom to attack smaller fish and crabs usually at night. The blue ringed octopi attack from behind, surrounding its prey with its eight arms. The octopi like to bite through the shells of the crabs in order to inject the venom so that the crabmeat separates from the shell and they feast on the meaty pieces.``

 

Symbiosis:

Commensalism is a type of symbiosis where one organism benefits and the other is unaffected. The blue ringed octopus is the one being benefitted in this situation. Coral Polyps build the coral reef, which is where all of these organisms live. That gives the octopus a place to live but it does not affect the coral polyps.

 

Species Comparison- Squid

Similarities:

The blue ringed octopus and squid have various things in common. They are both cephalopods that have eight arms and are head footed animals. They have large varieties of habitats and are both cold-blooded.

 

Differences:

The two animals catch their food in different ways. Squid catch their food with their long tentacles, while octopi grab their prey, break through their shell and inject paralyzing venom into it. Additionally, an octopi’s life span is 1-3 years and a squid ranged from 9 months to 5 years.


 

Resources:

Title: Blue-Ringed Octopuses

Last Updated: 1998-2013

Group Responsible: Marine Bio Inc.

Date found: May 28

http://marinebio.org/species.asp?id=403 

 

Title: Predators of the Blue-Ringed Octopus

Last Updated: 2010

Date Found: May 20

http://predatorsoftheblueringedoctopus.awardspace .info 

 

Title: Blue-Ringed Octopus

Last Updated: June 4, 2013

Group Responsible: Wikimedia Foundation

http://en.wikipedia.org/wiki/Blue-ringed_octopus

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