2. WHAT ARE THEY?
An octopus belongs to a group of animal that called
mollusks
They are about 150 species of octopus
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3. BLUE RINGED OCTOPUS
An octopus has 3 hearts and blue blood
They have 8 arms and use their to catch prey
The size of the blue ringed octopus is 5 to 15 cm
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4. Eat small crabs, hermit crabs and
shrimps
They change their colors according
to their feelings
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5. VENOM
The venom of blue riged octopus can kill 26 humans
in a few minutes
The poison is secreted by the octopus’s saliva
The toxin was created by the bacteria
The bacteria formed the tetrodotoxin (TTX)
C11H17N3O8
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6. TTX EFFECTS
Act on our nervous system
Discrupts sodium chanel
Trouble seeing, speaking and breathing
Abdominal pain
Vomiting
Suffocation
Die
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7. REPRODUCTION
Production of 50 to 100 eggs
The female will carry the eggs around her in her brood
The mother die soon after the babies are hatched
The babies are born as a plancton
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8. Thank you for your
attention!!
Do you have any
questions?
Caminde.rezai(at)etu.emse.fr
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