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Giant Squid’s are very diverse when it
comes to where they reside, some thrive in the warm tropic waters
where others find comfort in cold waters. Most of the time they will
be found near 1000 feet below the surface where water is cooler and

Giant squids diet consist of medium
sized fish and smaller squids, they use their testicles to catch and
squeeze their prey. Squids will sometimes also use their teeth to rip
apart and swallow prey. Unlike other animals where hunting is usually
done in groups or packs such as the wolf, Giant squids tend to hunt
alone, allowing them to eat whatever they want to eat.

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After catching and killing prey, Giant
Squids use their powerful beaks to break apart food, then uses their
radula, or tongue to push food into their esophagus which can also be
used as a jaw. After passing through the esophagus into the stomach,
digestion begins. The stomach, which is a small white sac connected
to a much larger organ known as the cecum. Food is then broken down
and extracting nutrients and other usable elements. Next is the
intestine where unneeded material are passed through and compressed.
The last process takes the excrement passing through the rectum and
out the anus, where it goes through the mantle and out the funnel
into the ocean.

Nervous system
The Giant Squid has a very developed
and mature brain, complex nervous system and is the most intelligent
invertebra. Giant Squids have 2 main nerve centers that connect
throughout the squids body by two large axons. These axons are 1,000
times those found in humans.

In Giant Squids, water enters the
mantle, which houses the gills and is where gas exchange occurs
through the water. After blood is pumped to the gills, the heart
pumps the oxygenated blood throughout the body. Because Giant Squids
have an extremely high metabolic rate, and are very active, they
require three hearts, two branchial hearts, and a systemic heart.

Circulatory system
Giant squids, like humans have a closed
circulatory system, meaning all the squids blood is trapped in a
network of blood vessels (arteries, veins, and capillaries) two of
the hearts are located next to each set of gills which are known as
branchial hearts which are responsible for pumping blood into the
gills where it carries out the respiratory system. The systemic heart
located between the gills is used to pump blood through the squids
body. A Giant Squid can actually independently operate their own
blood vessels by shutting down if they are damaged to prevent from
bleeding out and dying.

Sensory Organs
Having eyes the size of beach balls,
Giant Squid’s eyes are designed to absorb light to better see in the
dark. Squids have 2 organs called statocyst which are hallow,
fluid-filled sacs lined with hair cells. The outside of the statocyst
are covered with hair cells which are connected to nerves, leading to
the brain. Inside each statocyst consist of calcium carbonate called
a statolith. This enables the Giant Squid to sense its own postion in
the water, allowing a more active and accurate attack on prey. A
study found that squid’s statocyst can respond to sounds, but only to
low frequencies.

On the top of the Giant Squids mantle,
you’ll find fins which are used for slow locomotion and to maintain
position in the water. They also have been found using these fins to
twist and turn to assist locomotion and direction while traveling.
The squids also have a funnel which they use to jet propel them
through the water, which shows the funnel’s use for the excretion of
waste materials and ink. The vast size of a squid’s eyes allows them
to see bio-illuminates in the depths of the ocean. Giant Squids also
have a beak, located near the front of the mantel, which can break
apart food and start the digestion process.

Defense Mechanism
Giant Squids have 2 feeding tentacles
that double the length of the squid’s body. It uses these tentacles
to snatch prey over 30 feet away by shooting out these tentacles,
which are lined with hundreds of super powerful sharp-toothed
suckers. If threatened the Giant Squid will release a cloud-like ink
distraction which allows the squid to either use it as a decoy to
attract their predators, or as a “smokescreen” and hide behind
it. Squirting ink is a squid’s second defense since it requires a lot
of energy, the first defense being their ability to camouflage
themselves using specialized pigment cells called chromatophores.

Giant squids can live up to 5 years
and, in that time, reproduce only once. Unlike most squids where they
use their modified arms to transfer sperm, Giant squids expel a
packet of sperm called the spermatophore from a penis, which sticks
out of the squids mantle that can reach up to 7 feet and injects
sperm packets directly into a female’s arms. Due to the lack of
studies done on giant squids, scientist guess that the sperm packet
is then fertilized through the arms with the eggs. Scientist also
suspect that female’s ovaries release the eggs bound together with
jelly, then the sperm senses the eggs direction and migrates towards
that direction to fertilize the eggs. Next females release millions
of very tiny transparent fertilized eggs into the water in a jellied
clump known as an egg mass. Only a few survive to grow into massive
marine predators, due to being snatched by other hungry marine

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