The most dangerous marine animals in the world

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Marine wasp or box jellyfish

The most dangerous animal in the marine world is, without a doubt, the sea wasp or box jellyfish scientifically called, Chironex fleckeri . It is a jellyfish and although many people believe that they simply produce hives and burns that can be more or less painful, the truth is that this species in particular is poisonous. It is one of the most poisonous animals in the world because its poison is lethal with little quantity, and more specifically, it is the most poisonous animal in the world.

It lives in Australian waters and many people have died over time by its bite, as with injecting less than 1 milligram and a half of its venom, this jellyfish is capable of killing an adult human in a short time, without even giving him time to swim back to shore. Like many poisons in the animal kingdom, it attacks the nervous system, producing paralysis, immense pain and, finally, causing a collapse of the nervous and cardiovascular system, arresting the heart .

This terrifying animal by the effect of its contact, it is one of the largest jellyfish, because its head can measure about 25 cm but counting also its tentacles can measure 3 meters and weigh up to a couple of kg.

 The most dangerous marine animals of the world - Marine wasp or box jellyfish

White shark

This is one of the largest marine animals that we can find and at the same time one of the most fearsome and dangerous. The Carcharodon carcharias or white shark lives in temperate oceanic waters and in some temperate seas and is the largest marine predator in the world, it can weigh 2 tons (2,000 kg) and in its adult stage measures between 4 and 6 meters in length. They have 3,000 teeth with which they tear the prey to eat it, but they also use it to catch prey and swallow it all at once.

They eat both fish and marine mammals but, even though they give us so much Respect and fear and they are really impressive animals, normally they do not approach humans, they do not usually attack us nor are we their usual or preferred food. They attack us because they feel threatened by our presence or out of pure curiosity, to know what we are, many of their attacks are not deadly, although they can be.

 The most dangerous marine animals in the world - White shark

Marine snake

The cobra or marine snake scientifically known as Hydrophiinae are poisonous snakes and, in fact, its venom is more potent than that of the cobras of land ] There are several species of these such as yellow or striped, but all have flat or rowing tail, an adaptation to aquatic life.

These marine snakes live in the Pacific Ocean and the Indian Ocean. Its basic food is fish, crustaceans and mollusks, so we are not in danger of being their prey, but they are attacked if they feel cornered, invaded or frightened, because they attack us only to defend themselves. Its bite causes intense muscle pain, drowsiness, respiratory paralysis, jaw spasms and blurred vision, as neurotoxins attack the central nervous system causing death soon after either by dose or by asphyxia.

 The most dangerous marine animals in the world. world - Sea serpent


If it is not the most dangerous fish on the planet it is without doubt among the first positions of the most dangerous fish . The lionfish or Pterois volitans is a clear example of why poisonous animals have bright and colorful colors, because they are white with brown or reddish stripes that stand out a lot, especially when they it gives some light when they swim closer to the surface.

They have long spines from the head to the tail, along the whole back, and in all their fins and tail. At the base of these quills has a poisonous glands that produce and expel the poison through these thorns when they need it, basically when they are pressed to be stepped on, caught, bitten … This poison produces a great pain and can lead to death by paralysis and asphyxia.

 The most dangerous marine animals in the world - Lionfish


Another of the most dangerous sea animals and the ocean is the stone fish. This animal, called scientifically Synanceia horrida is one of the most poisonous and has neurotoxins and cytotoxins, which makes it a very dangerous being for others in its environment and for us if we step on it by confusing it with a stone or rock, because its appearance is similar and camouflages itself. Its poison is found in its tips or spines that cover its entire skin, but the most poisonous are in the pelvic, anal and dorsal fin areas.

Live in the Pacific Ocean and the Indian Ocean and its main food are crustaceans and small and medium fish. Among the symptoms of a collision with this dangerous fish, apart from feeling a more or less strong prick when leaning on a rock, highlights symptoms such as swelling of the area, headache, pain throughout the body, high blood pressure, arrhythmias, dizziness , nausea, vomiting, convulsions, muscular paralysis and cardiorespiratory arrest.

 The most dangerous marine animals in the world - Stone fish

Blue-ringed octopus

The octopuses are ones of the 10 most intelligent animals in the world. world and those that are also poisonous, such as the octopuses of blue rings or Hapalochlaena . These cephalopod mollusks are another clear example of a poisonous animal that has bright colors to warn us, because as we see in the image, its blue rings are very showy next to the yellow of the rest of its skin.

This animal is one of the most dangerous because its poison is one of the most deadly, in fact it is the only octopus that can kill a human with its venom by biting, causing muscular or motor and respiratory paralysis. A little less than a milligram of your neurotoxin can already kill an adult human. They live in the Pacific and Indian oceans and do not measure more than 20 cm.

 The most dangerous marine animals in the world - Blue-ringed octopus

Marine crocodile

This is a reptile that we are used to seeing on land, in rivers and lakes, but there is a species that lives in the ocean: the marine crocodile or Crocodylus porosus . This species of large reptile is also commonly called saltwater crocodile, sea crocodile, estuarine crocodile, as they also inhabit them, or porous crocodile by its scientific name.

It inhabits from Southeast Asia to northern Australia and it is the largest crocodile in the world and, therefore, the largest reptile on the planet. There is quite a difference in size between males and females, since they usually measure between 2 and 3.5 meters while they usually measure between 6 and 7 meters and weigh between 900 and 1,500 kg or 1 and a half tons, and they average ton or 500 kg. Its mouth is provided with 66 teeth and exerts a pressure of 1,770 kg thus this is one of the most dangerous animals in the marine world.

 The most dangerous marine animals in the world - Marine Crocodile

Shark bull

This is the second shark in this list of the world's most dangerous animals . This fish of the shark family lives in shallow or shallow water, so if we go out to the open ocean or the ocean we can find it more easily than other sharks. It is one of the sharks that most often approaches the coasts because there it can reach shallow sand bottoms. It lives in tropical and temperate waters in the Mediterranean Sea and the Atlantic, Indian and Eastern Pacific oceans.

It is robust, compact and the area of ​​the back marked pronounced more its fin, in addition in comparison to its body its head is small and flat with a pointed snout and his eyes are quite small. The bull shark or Carcharias taurus measures something more than 3 meters long and has three rows of teeth in each jaw. The teeth of this dangerous species are narrow, long and have the smooth edge, this does not serve them as much to tear as other sharks, but is a perfect way to hold the prey and swallow them whole.

 The most dangerous marine animals of the world - Shark bull

Snail cone poisonous

It may be surprising or curious but yes, among the most dangerous marine animals on Earth we find a snail. The venomous cone snail is a scientifically named species Conus ateralbus that has a venom can be deadly to humans and it is to many marine animals. Its poison produces paralysis and in a very short time death, especially for animals that need to come to the surface to breathe.

On the front they have a retractable horn, that is to say that they take out and store as needed, and that connected to the gland that produces its poison and use it to inject it. Undoubtedly, it is one of the most dangerous animals of the ocean .

 The most dangerous marine animals in the world - Venomous cone snail


Puffer fish

Although has a funny aspect, especially when it swells, the Tetraodontidae or pufferfish is a really dangerous animal if we eat it . The person or animal that dares to eat it will be poisoned and die in a short time, although in Japan it is known as Fugu and is considered a delight for the palate, somewhat ironic.

It has poisonous glands spread over almost everything the body, as in the liver, in the genitals, the skin and various organs or viscera. Specifically, its toxin can kill up to 30 people . Therefore, it can only be prepared and cooked by licensed chefs.

 The most dangerous marine animals in the world - Pez globo

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Emily Harris

Hi Guys, Girls, and Cats:-p I am Emily Harris, and you can see in above pic. She loves me I swear. I saved her from a dumpster a few weeks back.

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