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Blue Ringed Octopus

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by

Alessandro B

on 11 November 2017

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Transcript of Blue Ringed Octopus

The blue ringed octopus (both species) are very small and powerful.Their whole body is very
flexible
. They are about
8 inches long (20-30 cm) which is about
the size of a ruler.Their arms can spread very wide.The
rings of blue are about 2 mm in diameter and have about 50-60 of them on their whole body.
The normal blue ringed octopus weighs about
28 grams
.
Tubercles cover the head and mantle
. All
eight
arms are marked with
about 10 evenly spaced brown patches down their arms
.The blue ringed octopus turns
purple
when
swimming
.At the same time , the head
inflates
when
swimming.
Life Cycle
The blue ringed octopus female lays between
50-100
eggs after the
male engulfs her mantle obstructing her vision.
The
hectotylus
is inserted under the
mantle
and
permatophores
are released into her
oviduct
. She guards them by
carrying them under the tentacle
. they hatch about
50 days later into planktonic paralarvae.
The female dies as she is unable to eat while she guards her eggs.The blue ringed octopus is the size of a
pea when first born
then grows to the size of a
golf ball.
Habitat
Adaptations
The blue ringed octopus has a large amount of
venom
than other octopus species.They are super
aggressive
. They can
kill
a
human
in
minutes if bitten
. Their
beak like mouth
is great for eating
hermit crabs
and
small sea creatures
. The venom is found in it's
saliva
.There are
two
ways the blue ringed octopus kills it's prey. One way is that the octopus
bites
it's prey to
expel venom into it's blood

stream
and kill it. Or , it will
expel venom into water
and venom will enter the
prey's gills
.
Interesting Facts
Very interesting facts about the blue ringed octopus are , there are
2
different species ,
greater blue ringed octopus and the southern blue ringed octopus.
The blue ringed octopus has the ability to
flatten
itself to
blend into sand to pop out and kill it's prey
. It is the most
deadly of all cephalopods.
The blue ringed octopus is usually seen
swimming rather than crawling
like other cephalopods. The
toxin
is created by
bacteria in the salivary gland
. The soft
tissues
are extremely
poisonous
, if
consumed
by an animal that is not
immune to the toxin
. Animals that are
immune to the toxin
are
small cephalopods like pygmy octopuses.
The blue ringed octopus can
kill twenty-six adult humans within minutes
. Their
"beaks"
can
penetrate through a wetsuit!
These are super interesting facts so that you won't be messing around with these little beasts.
These pictures represent the blue ringed octopus in its habitat.
This picture and video represent the blue ringed octopus' appearance.
This picture represent an adaptation of the blue ringed octopus.
Greater blue ringed octopuses are found off the coasts of
Northern Australia (Queensland) , Papua New Guinea , Solomon Islands , Philippines , Thailand , Sri Lanka , Saudi Arabia , and Japan.
The southern blue ringed octopus is found off the coast of
Tasmania , South Western Australia (Australia) , New South Wales (Australia) , South Australia (Australia) , and Victoria (Australia).
Both species of octopi live in tidal pools and some live in coral reefs.
Appearance
Blue ringed octopus swimming
Blue ringed octopus flattened in sand.(Adaptation)
Cluster of blue ringed octopus eggs
Full transcript