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The Blue Ringed octopus is the worlds most poisonous octopus. They live in the Pacific Ccean from Japan to Australia and especially on the Great Barrier Reef. While resting the octopus is a brownish-yellowish colour. Once the octopus senses a predator or feels scared, it lights up and can be recongined by its yellowish skin and blue and blackish rings. Then it bites and releases a toxin 1000 times more powerful than cyanide. Once bitten, the venom attacks and freezes the victoms muscles which causes the loss of sight, taste, and touch. Soon after that the body goes into complete paralysis and if the victom remains untreated, he or she could be dead in as little as 90 mins.



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Four Characteristics and Basic Needs
Cells- The Blue Ringed octopus has many types of cells, just like any other animal.
It has dermal chromatophore cells to camouflage itself, and skin cells called chromatiphores.

Reproduction- A female octopus can only lay about 50 eggs in their lifetime. This happens at the end of autumn. Then the eggs are kept under the octopuses arms for about 6 months. The female octopus will not eat during this time. Once the eggs hatch the female octopus dies and the baby octopuses will be fully grown within a year.

Resonce- When a Blue Ringed octopus feels threatened in any way, its body responds turning bright yellow with peacock blue rings. This makes the octopus look intimidating and is also a warning for the predator to back off.

Grow and Develop-
A blue ringed octopus is fully grown about a year after birth. It is only about the size of a golf ball when fully grown. The Blue Ringed octopuses only lives to be about two years old.

Air- Even though they arnt fish, a blue ringed octopus breathes through two gills. The water gets sucked in through two internal gills and then extracted through a tube called a "siphon"

Water- (could not find this information anywhere! )

Food- The Blue ringed octopous mainly eats shrimp and crab. It hunts by first pouncing on its prey and injecting it with venom. Then, once the prey is paralized from the venom, it tears pieces off using its beak and then sucks out the remaining flesh.

Shelter- The blue ringed octopus lives in small tidal pools and shallow water


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Classification Guide

Kingdom AnamaliaAre multicelular and can move spontaneously and independently
Phylum Mollusca
Highly diverse in size, has diverse body structure and are marine animals
Class Cephalopoda
Has bilateral body symmetry, a head and tentacles

Order Octopoda
Octopuses have two eyes and four pairs of arms and has a hard beak,
with its mouth at the center point of the arms.
Most octopuses have no internal or external skeleton.

Family Octopodinae
Family containing the majority of octopus species.


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Special Features and How They Help the Blue Ringed Octopus Survive

A Blue ringed octopus has no spine, 8 arms, and a yellowish brownish colouring when it hasn't been provoked. When provoked it has bright blue circles all over its body. The fact that it doesnt have a spine makes the blue ringed octopus be able to squeeze into small areas to get prey that is hiding and would otherwise be out of reach. The octopus has a yellowish-brownish colouring so that it will blend in to the sand on the bottom of the ocean. It is also helpful because the octopus can sneak up on its prey without it noticing and the octopus doesnt have to worry about other predators. Once it has been frightened or feels threatened in any way the bright blue circles appear and the octopus puffs up to make itself look larger and more dangerous because humans know that most of the time creatures with bright colours are poisonous, just like the Blue ringed octopus.


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