Jellyfish and their stings
Name of the neighborhood:
The sea jellyfish (True jellyfishes), whose
scientific name is (Scyphozoa), belongs to the animal kingdom, the mollusk
phylum, the cnidarian phylum, and the genus Cupaceae.
It is also one of the organisms found on the
coast, and some of them are found in the depths of the sea.
They were discovered more than a million years
ago.
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Jellyfish and their stings |
Length:
The average length of jellyfish usually ranges between
1.27-40 cm, and some may grow up to two metres.
Weight:
The average weight of jellyfish is between
20-400 grams.
Characteristics of the animal:
Jellyfish do not have any muscles, brain, or
even heart, in addition to most other organs.They also have claws that end in
stings that they use to defend themselves, and their stings are usually highly
toxic.
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Average age:
The average lifespan of jellyfish ranges between 3-6 months.
Types of jellyfish:
There are many types of jellyfish, the most
famous of which are the following:
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Lion's mane lamp:
This species acquires a reddish-brown color, and
its head appears in the form of a disc or plate.
It has eight tentacles up to 150 meters long.
It is characterized by being very stinging, and it is one of the largest sea jellyfish.
Ordinary jellyfish:
It is one of the most widespread species, and it
is transparent and resembles the shape of a circular bell.
Small species appear in the summer, while large
species appear on the coast in December.
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Sea nettle:
It is in the form of a flat, circular plate,
appearing white to pink.
It has mouth-like structures consisting of
short, highly venomous anterior appendages.
Portuguese Man of the Sea jellyfish: Its
structure resembles a floating bag filled with purple gas, and has long red,
purple, or blue tentacles.
It is spread throughout the world, usually in
tropical waters.
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Floating bell lamp:
It is a lamp that takes the form of a flat,
colorless bell with white spots.
It has eight thick, transparent tentacles, from
which hangs a longer structure that resembles a transparent stripe.
Marine nut jellyfish:
It is a non-venomous species.
Its body resembles a comb in transparent rows.
It is found extensively in the summer in the
Gulf of Mexico and the western Atlantic Ocean.
Blue button lamp: This species looks like
buttons.
Its color ranges from purple to blue.
Its tentacles are not biteable, so it is
non-toxic.It is found in the summer in the warm waters of the Atlantic Ocean.
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Jellyfish behavior:
There are many behaviors specific to jellyfish, the most important of which are the following:
The range of movement of the jellyfish is
limited, and it depends largely on water and wind currents to move from one
place to another.
Jellyfish live in the air and water interface
all year round.
Jellyfish spend their time searching for food,
finding a mate, or escaping predators.
Some species of jellyfish migrate once or twice
a day.
Jellyfish swim against the current in remarkably
shallow areas by contracting and then turning their bodies back.
Jellyfish feed:
Jellyfish food
Most jellyfish feed on the following:
Fish.
Shrimp.
Crab.
Small plants.
Predators:
There are many predators of jellyfish, the most
important of which are:
Big fish.
Sea turtles.
Humans.
Harmful effects and benefits of jellyfish sting on humans:
Below is a mention of the most prominent
information related to the harms and benefits of jellyfish sting:
One of the most common damages is a jellyfish
sting, which can be fatal if there is no immediate medical intervention.
The rate of tolerance to infection varies
depending on the age of weight and health of the person, and according to the
area affected by the sting, whether the face or limbs.
Within minutes or hours, a sting causes
blisters, itching, and rashes.
It leads to severe pain for up to 10 days, with
a change in skin color and mild roughness of the tissue for up to 8 months.
The treatment is usually through local paint to
relieve the pain.
Sea jellyfish poison resulting from cnidarians
is used in the manufacture of some chemical compounds to treat some types of
cancer, such as:
Liver cancer, by extracting the poison, drying
it, and then using it in laboratories.
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Other information about jellyfish:
Jellyfish reproduction:
There is a lot of information related to
jellyfish reproduction, the most important of which is the following:
Sea beavers reproduce through asexual contact.
Males and females release eggs and sperm into
the water, where fertilization takes place until a larva forms.
The larvae settle on the sea floor, growing
alone until they become adult jellyfish after three months.
Jellyfish sleep:
Beavers can also sleep like other living
organisms.
The study was conducted in laboratories on a
type of jellyfish that lives upside down, using its pulsating bell to help it
move in the water.
However, the movements of this pulsating bell
decrease at night, and they become less active for a period ranging between
10-20 seconds at intervals.
From night, sometimes the pulsating bell stops
beating completely.
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Jellyfish adaptation methods:
Jellyfish adapt to their surrounding environment
in several ways and means, the most important of which are the following:
A jellyfish bites its prey, then pulls it out
with its arms to put it in its mouth.
Sea jellyfish live in water rich in nutrients
and poor in oxygen.
Polyps "pre-fertilization jellyfish"
may benefit from salt water to grow.
Sea jellyfish can detect water currents as they
are their means of transportation, as they usually swim against the current.
Jellyfish have hair called trigger hair, which
helps them detect prey.
It has long, thin tentacles that hang from the
bell and are covered with stinging cells that help it defend itself and pounce
on its prey.
Amazing facts about jellyfish:
There are many amazing, never-before-mentioned facts about jellyfish, the most important of which are the following:
Asians use jellyfish for their food, as they
have become the main ingredient in preparing noodles, sushi, and salads.
Pickled and dried jellyfish are also considered
a delicacy in some countries.
Sea beavers are classified as marine gelatinous
plankton, not fish.
The jellyfish has a high nutritional value,
which helps raise the level of collagen in the body.
Jellyfish contribute to enhancing memory and
help maintain weight loss when added to the diet.
When taken, jellyfish lower high blood pressure
and maintain their levels.
Sea jellyfish are beneficial for heart patients; It is low in calories and carbohydrates, and contains amino acids and proteins.
With my best wishes
