In spite of the changes that are taking place on the earth right from the day of its formation, sharks have always existed. They surely come under the 'survival of the fittest' list for their adaptation and strategic skills.
Their highly refined senses of sight, hearing, taste, touch and electromagnetism helps them to adapt to different conditions. The livers of sharks are fat, big and oily and it helps them to float on water.
Though we have been much influenced by the 'Jaws' series, let me assure you that sharks are not predators and do not like to feed on us. They are mysterious creatures of the wild waters, and it would be better to find out more about them, before judging them.
Bull shark (Carcharhinus leucas) is well-known for its unpredictable, capricious and aggressive nature. More than any of the other sharks, bull shark is the most feared and dangerous. Gravest! Bull sharks famous cousins, great white shark and tiger shark, are equally dangerous, as all three of them are most likely to attack human beings in case they find anyone entering their zone, as these animals are known to be extremely territorial. These sharks are spotted in the Amazon river, Mississippi river, etc. They must maintain the salt content in their body for their survival. Their other names are Van Rooyen's shark, Zambezi shark, the Ganges shark, Nicaragua shark, etc.
Great White Shark
Great white shark (Carcharodon carcharias) is at the top of the marine food chain as they are the ultimate predators, ruling the oceans. They are cartilaginous fish, i.e., their skeletons are made up of cartilages, and not of bones. Many scientists believe that they are inquisitive, intelligent creatures. They have brains equal to their brawns. Its body and teeth combined with its super senses, make them the most superior among its species. Hiding or escaping from a great white shark is never an option, as they can detect even a drop of blood from a mile away and they can also detect electrical discharges from hearts and gills. Other names are white pointer, great white, white shark or white death. Though these sharks have attacked humans on many occasions, most have been non-fatal. It is understood that they do not attack with the intention of harming, but do so by mistake. They mostly bite to identify and it has been understood that sharks mostly do not like the taste of humans.
Differences Between Bull Shark and Great White Shark
Now that you are familiar with bull shark and white shark, let's have a look at what sets them apart.
|Point Of Difference||Bull Shark||Great White Shark|
|Habitat||They cruise in shallow waters, but spend most of their time in freshwaters, which gives them the name 'freshwater whalers'.||They are found in oceans and shallow seas. These sharks are commonly found on the coasts of California, Australia and South Africa and in all cold temperate and tropical coastal waters.|
|Eating Habits||Their diet consists of fish, dolphins, sea turtles, carcasses, etc.||They eat seals, dolphins, white carcasses, elephant seals, etc. They rip off the chunks of meat and swallow without chewing it.|
|Attacking Strategies||'Bump and bite' is the technique used by the bull shark to attack the prey.||They position themselves directly below the prey and attack vertically up.|
|Reproduction||Reproduction is 'viviparous' (producing living young ones and not eggs). Female bull sharks give birth to, between 1 to 13 pups after gestation period. The young pups are about 27.6 inches at birth and they take 10 years to reach maturity.||Reproduction is 'ovoviviparous' (young ones come out from the eggs that hatch within the body). Between 2 to 12 pups are born after the gestation period and the shark pups are 5 feet at the time of birth.|
|Body Features||The shark is gray in color on top and white beneath. It has 2 dorsal fins and the tip of their fins are dark in color. They have pale stripes on the side of their body. Its snout is short and blunt, which is a unique feature of bull sharks, and its eyesight is poor, which is why they prefer to swim around murky waters along the shorelines.||They have a streamlined and torpedo shaped body and their snouts are pointed. They use their caudal fins, dorsal fins and pectoral fins to swim. They exert a force of 18000 Newtons on the prey when they bite.|
|Size and Weight||They can grow up to 11 feet in length. They weigh around 318 kg.||They can grow up to 20 feet in length and they weigh around 1900 kg!|
|Teeth||They have serrated, triangular sharp teeth in their upper jaw. Their teeth make a clean bite on the body of the prey. Lower jaw has a broad base with narrow and triangular teeth with sharp serrations and its anterior teeth are erect and symmetrical, while posterior teeth are oblique.||The great white shark has around 3,000 teeth in their mouth which are triangular, serrated, razor-sharp, and are 3 inches long.|
Both the sharks have a life span of up to 30 years. These sharks are attractive, powerful, magnificent and also dangerous. We all are fascinated by the stunning actions of these sharks in movies, however, it must be understood that sharks DO NOT feed on humans and attack only by mistake or for protection. It is sad that thousands of these animals are killed by us for our selfish motives or due to the ever growing pollution. In spite of the danger they pose to humankind, it can't be denied that they are one of the most beautiful creatures in the world and must be protected.