Sharks are a group of fish belonging to the class of cartilaginous fish, with a hydrodynamic body that easily displaces water, with 5 to 7 gill slits along each side or near the head, skin with many small spines covering the body against parasites. The row of teeth in the mouth can grow back. Sharks range from species the size of a hand, from Euprotomicrus bispinatus, an undersea fish only 22 centimeters long, to the giant whale shark, the largest fish at 12 meters in length equivalent to a single whale. whales but only eat plankton, squid and some other small fish. Bull sharks are also best known for their ability to swim in both freshwater and saltwater, even in deltas. Sharks are thought to have appeared more than 420 million years ago, before the time of the dinosaurs and there are very dangerous species. I will introduce you to the most dangerous sharks in the ocean in the following article!
1. The Hammerhead Shark
The Hammerhead Shark is a dangerous shark listed on the list of the most dangerous sharks in the ocean. This fish is also known as the "hammerhead shark". Although most hammerhead sharks are quite small in size, with a body up to 6 meters long and weighing up to 590 kg, they are still an obsession for many people. According to current statistics, there are 9 species of hammerhead sharks, but the great hammer shark family is still the largest type. Their teeth are like those of bull sharks, looking a bit weird. Hammerhead sharks can be dangerous to humans depending on their size, with strength and strong, sharp teeth enough to make them a potential threat to humans. . Among the hammerhead sharks, the Whitefin shark with its large, scalloped shape and smooth hammerhead is the most dangerous.
The hammerhead shark's eye position allows it to have a better vision than most other sharks. Together with specialized sensory organs distributed widely on the large head, they can scan deep into the ocean and find food more easily. Sharks possess a group of sensory organs also known as "Ampullae Lorenzini senses", which allow them to detect electromagnetic pulses or prey activity. The sensitivity of ampullae in hammerhead sharks is quite high, so this makes it easy for them to find their favorite meals like rays, even though these stubborn prey are well hidden in the sand. Most hammer sharks are quite small and are considered harmless to humans. However, the giant and fierce hammer sharks are also quite dangerous despite the many recorded attacks.
1. The Blacktip Shark
In addition to the hammerhead shark, the black fin shark is also very dangerous to humans. This fish has the English name The Blacktip Shark, they are found in tropical regions of the world. Do you know why they are named blackfin sharks? The reason is that they have small black corners seen on the fins and tail. Most of these sharks are quite small, more than 1.5 meters long, but there are also fish up to 3 meters long. According to statistics, there are 41 reports of this shark attacking humans and one of them has died. This is a very aggressive shark that has been blamed for the highest percentage of shark attacks in Florida.
Blackfin sharks have a very small range and exhibit long-term attachment to habitats, being able to stay in one place for many years. They are active predators, hunting small bony fish, cephalopods and crustaceans, but also eating sea snakes and seabirds. Behavioral descriptions of blackfin sharks are generally variable and often contradictory, partly reflecting geographical differences within the species. Like other members of the family, blackfin sharks are live birth fish, with the mother giving birth to 2 to 5 juveniles on a biennial, biennial or even biennial basis. . Before mating, the male swims close to the back of the female, presumably attracted by chemical signals released by the female. Juvenile sharks are usually found closer to shore and in shallower water than adults, often swimming in large groups in high tide areas.
3. The Sand Tiger Shark
The sand tiger shark is also known as the blue shark or the gray shark or the pointed tooth shark. Their English name is The Sand Tiger Shark. This shark is found in warm waters around the world. A developed sand tiger shark is capable of reaching up to 3.3 meters in length and weighing about 160 kilograms. They possess fierce teeth, long in three rows, extremely sharp, protruding from the mouth, making many people as well as some other sea creatures afraid. Some people when hunting them often use spears, which inadvertently provoke them. Did you know that some aquariums have sand tiger sharks? And there have also been a few accidents where people were bitten while these fish were in aquariums. And yet, according to statistics, there have been 64 reports of attacks with sand tiger sharks as the main culprit, two of which have been fatal. That is why it is classified as one of the most dangerous sharks in the ocean.
The sand tiger shark, also known as the gray shark, has an aggressive appearance but is actually a species that deceives the opponent. They possess large bodies and sharp teeth that always stick out, even when their mouths are closed. However, animals with a fierce appearance like the Sand Tiger guy here are quite likable and only become rough when disturbed. The sand tiger shark is the only known shark that swims close to the surface of the water and swallows air. They will keep this air in their stomach because it allows them to float on the water to easily find prey. They are also very greedy predators, often feeding at night and often near the seabed. Their diet is mainly small fish, but sometimes they also eat some crustaceans and squid. They also sometimes hunt in groups and have even been known to attack fishermen's nets.
4. The Blue Shark
The Blue shark or blue shark is the culprit of 32 attacks on people and of which 4 people have died. We can find this species of shark in many marine areas around the world. In fact, we can find blue sharks from the waters of Chile to Norway. This is a species of shark that lives in deep water, so they rarely pose a threat to people. But in contrast, blue sharks will attack people when they are accidentally caught and brought into fishing boats or when people are stranded in the ocean due to shipwrecks, for example. This shark only needs to zone its prey for 15 minutes before attacking. And this is really one of the most dangerous sharks in the ocean that everyone needs to be aware of.
The blue shark is a species of oceanic shark that lives in the upper reaches of temperate and tropical deep seas worldwide. Common depths are from the surface to about 350 meters. In temperate seas one can also find them in the nearshore waters, while in the tropics they live in the deep seas. They are present in the seas stretching from Norway north to Chile. Blue sharks are found off the coasts of all continents except Antarctica. It prefers cool waters with temperatures ranging from 7 - 16°C, but also tolerates temperatures above 21°C. Blue sharks are calving, each time the female gives birth to 4 to 135 young. The gestation period is from 9 to 12 months. The age of sexual maturity in females is from 5 to 6 years and in males it is from 4 to 5 years. The scars left on the female are caused by the bites of the male during courtship. So, to adapt to this mating ritual, the female's skin is usually 3 times thicker than that of the male.
5. Bronze Whaler shark
Sharks are a group of fish belonging to the class Cartilaginous fish, with a hydrodynamic body that easily displaces water, with 5 to 7 gill slits along each side or near the head (the first slot behind the eyes is called the spiracle), the skin has many spines. small cover the body against parasites, the rows of teeth in the mouth can grow back. Sharks range from hand-sized species, from Euprotomicrus bispinatus, a seabed fish just 22 centimeters long, to the giant whale shark (Rhincodon typus), the largest fish at 12 meters long. equivalent to a whale but only eat plankton, squid and some other small fish. The bull shark (Carcharhinus leucas) is also best known for its ability to swim in both freshwater and saltwater, even in deltas. Sharks are thought to have appeared more than 420 million years ago, before the time of the dinosaurs.
Many people believe that they must always move so that water flows into their gills, ensuring their respiration, otherwise they will die due to lack of oxygen. But in fact one can keep a shark in place for a long time without the shark getting hurt, as long as it doesn't panic. This can be seen in its relatives, which are usually less mobile, such as the manta ray. There are many species of very dangerous sharks like The Bronze Whaler Shark, they have attacked 35 people and two of them have died. When mature, they can grow up to 3 meters in length and weigh about 306 kg. The Bronze Whaler shark has long, jagged teeth. They have attacked many people, in which the most commonly attacked objects are fishermen, beachgoers, and windsurfers along the coast of Australia. This is one of the most dangerous sharks in the ocean.
6. The Shortfin Mako Shark
It is impossible to ignore The Shortfin Mako Shark when it comes to the most dangerous sharks in the world. They are also known as Mako Sharks, which are considered warm-blooded. When grown, the Mako sharks average up to 3 meters in length. However, if they are fully grown, they can grow up to 4.5 meters long and weigh nearly 1 ton. If this type falls into the sea and encounters them, they will be swallowed whole. With such a large size, but this shark is extremely agile and their maximum speed is 74 km / h, hunting is not difficult for them. Mako sharks have the ability to jump out of the water and sink fishing boats. There have been 45 cases of human attacks of this fish with 3 deaths.
They can jump up to 6 meters high out of the water. Shortfin Mako sharks are ovoviviparous, meaning that the young develop with an ovum contained in a sac that remains in the uterus until birth. The gestation period of a mako shark is about 15 - 18 months. It has also been found that mako shark fetuses in the mother's body consume each other for nutrients. This is called cannibalism in utero. Although both sexes develop at the same rate, female (shortfin mako) sharks are thought to have a longer lifespan and they are also larger and heavier than male sharks. Shortfin mako sharks are famous for their speed and ability to jump out of the water. They have a better hydrodynamic shape than other sharks, and this, along with the rhythmic, lithe muscles typical of great whites, is the reason for their speed and agility. mako sharks in general.
7. The Oceanic Whitetip Shark
Next, we also need to mention the white fin shark known in English as The Oceanic Whitetip Shark. They are extremely dangerous whitefin sharks to humans. During the second world war, a ship was sunk off the coast of South Africa, resulting in only 192 out of 1,000 survivors. white fin fat. In 1945, a great white shark attack also sank the USS Indianapolis, killing 800 people. This fish usually lives in waters more than 19.5 meters deep and is rarely found in shallow water.
The great white shark is a surface-water fish, observed almost mainly where food is abundant, such as fur seals (Arctocephalus ssp.), sea lions, small whales, sharks, and bony fishes. . In the open sea, it was recorded at a depth of 1,200 m. This finding changes the view that great white sharks are inshore species. The great white shark has a large, strong conical snout. The upper and lower lobes on the caudal fin are approximately the same size as some species of the mackerel order. Their belly is white, while the back is usually gray (sometimes brown or blue). The color makes it difficult for prey to spot the shark because it breaks the outline of the shark when viewed from the side. From above, the darker shadows blend with the sea and from below it shows a minimal silhouette against the sunlight. The great white shark, like many other sharks, has rows of serrated teeth behind the main teeth, ready to replace any broken teeth.
8. The Tiger Shark
Another shark species that is also very dangerous to humans is The Tiger Shark, people call them tiger sharks. This shark is known to be a very aggressive, dangerous fish. There have been 155 attacks on humans, of which 29 deaths have been caused by this fish. Are you curious why they are called tiger sharks? The reason is that they have an aggressive temperament, and the stripes on their body resemble a tiger. You can find these fishes in tropical seas below 6 meters deep. Tiger sharks are also listed among the largest sharks on the planet. As an adult, this species can be 4.8 meters long and weigh more than a ton. They are the most dangerous sharks in tropical seas.
They reproduce by internal fertilization. The male inserts one of the attachment lobes (clasper) into the female's genital opening (the cloaca), which acts as a sperm passage. The male uses his teeth to hold the female during the procedure, often causing considerable discomfort to the female. Mating in the Northern Hemisphere usually takes place between March and May, with calving between April and June of the following year. In the Southern Hemisphere, mating takes place in October, December, or early January. The tiger shark is the only species in its family that are oviparous, hatching in utero and giving birth directly when fully developed. The young are born inside the mother's body until the 16th month. The litter is about 10 - 80 young. Newborns are usually 51cm to 76cm long. This shark normally reaches sexual maturity at 2 to 3 meters in length. It is not known how long tiger sharks live, but it is possible that they live longer than 12 years.
9. The Bull Shark - The Bull Shark
Another dangerous shark species for humans is a fish with very fierce teeth, The Bull Shark - bull shark. Bull sharks are believed to be the deadliest sharks in the world, but this is not entirely true for great whites either. This fish has killed 26 people and attacked 104 times fishing boats out to sea. They possess a strong body, when fully grown they can grow up to 3.5 meters long and weigh about 318 kg. This is a highly territorial fish and will attack anything if it feels threatened. White-eyed bull sharks have a higher chance of coming into contact with larger humans than any other shark because they usually live in shallow water along the coast as well as in fresh water - something quite unusual for other sharks. other sharks.
The white-eyed bull shark, Carcharhinus leucas, also known as the Zambezi shark in Africa and the Nicaraguan shark in Nicaragua, is a widely distributed species of shark that lives in warm, shallow waters along the coast and River. White-eyed buffalo sharks are known for their aggression, prefer shallow water and are common in brackish or freshwater areas including estuaries and rivers. They can live in both seawater and fresh water and can live in rivers deep inland. They have been found in Indiana, USA in the Ohio River. They are probably the same species of shark that have attacked humans in attacks near beaches, including in cases believed to have been caused by other shark species. The white-eyed buffalo shark is not a true freshwater fish, although it can live in fresh water unlike the 
river sharks of the genus Glyphis.
10. The Great White Shark
And the shark that becomes the killer of the sea is The Great White Shark. They are portrayed in the movie "Jaws", the great white shark is considered the most dangerous shark on the planet because they have attacked more than 400 people and killed 74 of them in total. This shark is extremely dangerous, when fully grown, they can grow up to 6.7 meters long and weigh more than 3.5 tons. The teeth will be up to 7.5 cm long, which is used to cut prey while their head is still moving. Great white shark has amazing speed, It would be unthinkable that this fish has the ability to become extremely powerful when combined with its large body. With a maximum speed of 56 km/h, the same white color makes them visible in shallow or deep water, in addition, they also frequently appear on coasts around the world. This is a carnivore that still exists today and became the killer of the sea, the most dangerous shark on the planet.
Great white sharks have no natural enemies other than killer whales. It is the largest carnivorous fish in existence. It hunts many species of marine mammals, as well as fish and seabirds. It is the only surviving species of the genus Carcharodon, and ranks first among sharks that attack humans. The IUCN lists the great white as an endangered species, while it is included in Appendix II of CITES. Peter Benchley's novel Jaws and Steven Spielberg's blockbuster portray great white sharks as "brutal cannibals". Humans are not the white shark's preferred prey, but it causes the largest number of reports and deaths of any shark attack. The great white shark is a surface-water fish, observed mostly where food is abundant, such as fur seals (Arctocephalus ssp.), sea lions, cetaceans, sharks, and bony fishes. . In the open sea, it was recorded at a depth of 1,200 m. This finding changes the view that great white sharks are inshore species.
Those are the most dangerous sharks in the ocean. Which fish do you think is the scariest and most dangerous? Leave your thoughts below to let us know!
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