Bull Shark (Lake Nicaragua Shark)
The bull shark is one of the species of sharks, which is also known by several names like- Zambezi shark, Swan River whaler, Fitzroy Creek whaler, and Nicaragua shark. The bull shark can thrive in both saltwater and freshwater. They are closely related to great white and tiger sharks.
Bull sharks can be distinguished with other sharks by their high width and length that gives them a bold look. These species display counter shading like other sharks, which helps them to blend with their surroundings into gloomy water. The top body of bull sharks is grey, whereas, from the bottom, they are white. The vision of these species is restricted as they have small eyes as compared to other shark species.
Bull Shark Facts (Interesting Bull Shark Facts)
- Sharks are known as excellent swimmers, as they acquire muscular physique and long fins. Large spines on the back of a bull shark that stands out of the water are used for balancing.
- A smaller ridge located at the farther end is a rear dorsal fin.
- Behind the head of the bull shark, pectoral fins are located that helps them to lift and drive themselves.
- Bull Sharks breathe through gills that are situated on the side of shark’s head.
- The upper and lower jaw of these species consists of several large and triangular teeth.
- Bull sharks can survive in both freshwater and saltwater, as they have a unique adaptation that their kidneys are capable of evacuating a large amount of salty blend through their bloodstreams called urea. They reduce the consolidation of salt and urea by peeing a lot.
Bull Shark Behavior:
The behavior of bull shark is aggressive and unpredictable, and so they are nicknamed as ‘the pit bull of the sea.’ They use their intense sense of smell to find their prey. Bull sharks hunt in a unique way, which is known as ‘bump and bite.’ They hit violently on the head of their prey first before biting, they then repeatedly gears its victim until they are unable to run away.
Bull sharks usually mate during summers or autumns; unlike humans, the young bull shark is developed in their mother’s womb. The gestation lasts for a year, and the female will deliver between 1 to 13 offspring, which are known as ‘pups.’
The Tiger Shark (Tiger Shark Information)
The Tiger shark is the most popular species of requiem shark and also the existing member of the Galeocerdo genus. These species got their name from the dark stripes, which is similar to a tiger’s pattern, but when these sharks got mature, the strips started to fade and disappears.
Tiger sharks are powerfully muscular with a pair of pelvic fins, two dorsal fins, a caudal fin, an anal fin, and five-gill openings. Unlike bull shark, these are also counter-shaded, the skin from the bottom is a white or light yellow, the underbelly blends with the sky. The upper body is dark, which ranges from bluish-green to dark green or sometimes black. The head of a tiger shark is wedged shaped that makes it easier for the shark to turn quickly on one side.
Tiger Shark Facts (Interesting Facts About Tiger Sharks)
- Tiger sharks have excellent eyesight and a strong sense of smell, which makes them sharp hunters.
- The upper and lower jaw of a tiger shark has rows of 24 teeth that are shaped like circular saws with notched edges.
- The large eyes of tiger sharks allow them to hunt at night and in deep water.
- These species consist of a sensory organ called a lateral line, which assists them in detecting minute vibrations in the water.
- The species reside in the northern hemisphere mates between March and May, while the species located in the southern hemisphere mates between November and January.
- The Tiger shark is the only shark species whose eggs hatch internally, and the young one is born when fully grown. The development period of a young tiger shark in their mother’s body lasts to 16 months.
Difference Between Bull Shark and Tiger Shark:
|Scientific name-||The scientific name of the bull shark is Carcharhinus leucas.||The scientific name of the tiger shark is Galeocerdo cuvier.|
|Habitat-||Where does bull shark live?|
Bull sharks are mainly found in coastal areas with warm waters. In the Atlantic Ocean, they have been recovered from the north of Massachusetts to the south of Brazil. In the Indian Ocean, one can spot them on the coastline of Africa, India, Australia, and Vietnam. They have also seen in the rivers of Amazon, Mississippi, Brahmaputra, and Brisbane.
|Where does tiger shark live?|
Tiger sharks can be found along the coast of tropical and sub-tropical waters. One can see tiger sharks in the north and South America, the Gulf of Mexico, Caribbean Sea, Africa, India, China, and Australia.
|Size-||The male bull shark can grow up to 7 feet, and females can measure to 11 feet long.||The average length of a tiger shark is between 10 to 13 feet; on the other hand, females are slightly larger than males.|
|Weight-||An adult male bull shark weighs around 209 pounds, where females being heavier weighs 290 pounds.||A male tiger shark weighs between 850 to 1,400 pounds, whereas female weighs 2,000 pounds.|
|Diet-||A bull shark living in the saltwater feeds on bony fish, dolphins, turtles, stingrays, and crustaceans. When a bull shark resides in freshwater, it feeds on crabs, shrimps, and squid.||A tiger shark feeds upon a variety of food that includes fish, seals, dolphins, sea turtles, birds, squid, sea snakes, and other smaller sharks. Tiger sharps are also known to eat garbage that crosses their path, which includes human-made objects also.|
|Predators-||Bull shark predators-|
Large sharks such as tiger shark and great white shark are known to be the predators of a bull shark. Sometimes crocodiles can also attack bull shark.
|Tiger shark predators-|
Tiger shark in itself is an apex predator, but besides humans, killer whales are the only predators of tiger sharks.
|Bite force-||The bite force of a bull shark is 1,330 pound-force that can crack and break the turtle’s shell.||The bite force of a tiger shark is 3,300 kg per cm square.|
|Lifespan-||The average lifespan of a bull shark is 12 to 16 years, but in captivity, they can survive for 30 years.||The average lifespan of a tiger shark is 12 years|
|Attack-||Bull shark attack-|
Bull sharks often dwell in shallow water where swim in along beaches and rivers. The international shark attack file (ISAF) listed bull sharks on the third position under the list of shark attacks. Several bull sharks are responsible for the invasion of the jersey shore shark attack in the year 1916. These species were suspected of being responsible for the death of four persons and injuring one.
|Tiger shark attack-|
Tiger shark ranks second on the list of several attacks recorded by sharks on humans. Although these species rarely bite humans. Unlike great whites, tiger sharks are not likely to swim away after eating a human.
|Conservation-||Bull shark conservation-|
Under the IUCN red list, bull sharks are listed as near threatened species. Humans are the biggest threats to these species; bull sharks are hunted for their meat, skin, liver oil, and fins. The other risks involve habitat fragmentation and pollution.
|Tiger shark conservation-|
The International Union for Conservation of Nature (IUCN) classify tiger sharks as near threatened. These species are hunted for their flesh, skin, liver, which contains a high level of vitamin A. in Hawaiian culture, the tiger shark is considered as sacred by the natives as they think the eyeball of these species possesses extraordinary powers of visual perception.
Bull Shark vs Tiger Shark:
As we have discussed the different features of the bull shark and tiger shark, It concludes that in a fight between both of them, the tiger shark has full winning opportunities. The Tiger shark is more substantial than a bull shark, and also, the tiger shark is recorded as the second most dangerous water animal, who is known to attack and kill humans. Although the bull shark is more aggressive than a tiger shark, the tiger shark is known to hunt its prey in such a way that the victim can’t escape from them. The bull shark can give fierce competition to the tiger shark. Still, the conclusion is tilted on the tiger shark.
Also read about Jellyfish.