bull shark weight
> Check the status of the bull shark at the IUCN website. The name “bull shark” comes from the shark’s stocky shape, broad, flat snout, and aggressive, unpredictable behavior. Bull sharks are hefty, heavily built animals, spanning lengths of around 7 feet and with an average weight of 500 pounds. Bull sharks get their name from their short, blunt snout, as well as their pugnacious disposition and a tendency to head-butt their prey before attacking. Since the bull shark occurs in several underdeveloped regions of the world including Central America, Mexico, India, East and West Africa, the Middle East, Southeast Asia, and the South Pacific, bites often go unreported. Bull sharks average life span is about 27-28 years, but sometimes they live longer. 85726 ); 400.0 cm TL (female); common length : 260 cm TL male/unsexed; (Ref. Young bull sharks, however, can fall prey to tiger sharks (Galeocerdo cuvier), sandbar sharks (Carcharhinus plumbeus), and other Bull sharks. , After Hurricane Katrina, many bull sharks were sighted in Lake Pontchartrain. A typical female bull shark is 2.4 m (7.9 ft) long and weighs 130 kg (290 lb), while a male averages 2.25 m (7.4 ft) and 95 kg (209 lb). . They also consume stingrays and juvenile sharks including small individuals of their own species in their inshore nursery habitats. In the western Atlantic, bull sharks migrate north along the coast of the U.S. during summer, swimming as far north as Massachusetts, and then return to tropical climates when the coastal waters cool (Simpfendorfer and Burgess 2009). 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A bull shark can swim at a speed of approximately 40.2 km/h which is around 25mph. The bull shark is commonly found worldwide in coastal areas of warm oceans, in rivers and lakes, and occasionally salt and freshwater streams if they are deep enough. They have broad, rounded snouts and small eyes (Compagno et al. Bull sharks are frequently observed at recreational shark feeding dives in the Caribbean. Bull sharks can be found worldwide along coastal areas, lakes and rivers. A full grown bull shark can be around 10 to 11 meters in length. 1995) and maximum reported weight is 316.5 kg (~698 pounds) (IGFA 2001). They lack an interdorsal ridge. In early June 2012, off the coast of the Florida Keys near the western part of the Atlantic Ocean, a female believed to measure at least 8 ft (2.4 m) and 800–850 lb (360–390 kg) was caught by members of the R.J. Dunlap Marine Conservation Program. 9 oz. However, it is likely that this species may responsible for many more. (2005). The maximum reported length of the bull shark is 400 cm (~13 ft) (Compagno et al. The bull shark (Carcharhinus leucas) is the third most dangerous shark, after the great white and tiger shark.. Bull sharks belong to one of the most popular shark families: the requiem sharks; and is a member of the genus Galeocerdo.. After gestating for 12 months, a bull shark may give birth to 1 to 13 live young. Other food items occasionally reported in bull sharks include sea turtles, dolphins, crabs, shrimp, sea birds, squid, and dogs. The courting routine between bull sharks has not been observed in detail as of yet.  These fish also are euryhaline fish, able to adapt to a wide range of salinities.  The gills of bull sharks are likely to be involved in the uptake of sodium and chloride from the surrounding fresh water, whereas urea is produced in the liver as required with changes in environmental salinity. The first dorsal fin is large and broadly triangular with a pointed apex. The young bull sharks are free from predators while they grow up in the river before they go out to the sea to find mates.. It has also appeared in the literature as Carcharias (Prionodon) zambezensis,Carcharhinus zambezensis, Prionodon platyodon, Squalus platyodon, Squalus obtusus, Eulamia nicaraguensis, Carcharias azureus, Carcharias spenceri, Galeolamna (Bogimba) bogimba, Galeolamna greyi mckaili, and Carcharhinus vanrooyeni. Bull sharks occur in tropical to subtropical coastal waters, worldwide.  Recent work also shows that the differences in density of fresh water to that of marine waters result in significantly greater negative buoyancies in sharks occupying fresh water, resulting in increasing costs of living in fresh water. The bull shark is considered a game fish in the southeastern U.S. and South Africa, and is fished by rod and reel from shore, piers, and bridges. The meat is either used for fish meal or sold in local markets for human consumption. The largest weight of a whale shark registered is 47,000 pounds or 21.5 tonnes.  As part of their survival mechanism, bull sharks will regurgitate the food in their stomachs in order to escape from a predator. The stomach was opened and all that was found were two small, unidentifiable fishes.  Reproduction is one of the reasons why adult bull sharks travel into the river—it is thought to be a physiological strategy to improve juvenile survival and a way to increase overall fitness of bull sharks.  It also lives in freshwater Lake Nicaragua, in the Ganges and Brahmaputra Rivers of West Bengal, and Assam in Eastern India and adjoining Bangladesh. Males can reach 200 pounds and 7 feet in length. Found in tropical and temperate waters around Australia, the bull shark has distinctive, small serrated teeth that are typically found in the whaler shark family. Size at birth is 56-81 cm (~2-3 ft) and size at maturity is 157-226 cm (~5-7 ft) for males and 180-230 cm (~6-7.5 ft) for females (Simpfendorfer and Burgess 2009). While a maximum size of 3.5 m (11 ft) is commonly reported, a single record exists of a female specimen of exactly 4.0 m (13.1 ft). Reaching lengths of 11 feet (3.5 m) and weights up to nearly 700 pounds (315 kg), the bull shark is one of the largest requiem sharks (Family Carcharhinide). The bull shark has some unusual traits compared to its cousins: thanks to how their bodies regulate salt, they can exist just as comfortably in freshwater as they can in the ocean, which means they often appear in large rivers and lakes which sit within 100 miles of the sea. The snout is very short; its mouth is wider than the snout is long. The size at birth is around 29 inches (75 cm). Bull sharks appear sluggish as they cruise slowly along the bottom, but are capable of quick bursts that allow them to capture smaller, agile prey.  This is an explanation for the behavior that is observed from the Bull sharks as to why there would be any reason for the adult bull shark to ever travel into a freshwater area despite being able to tolerate the high salinity of marine water. Humans have not domesticated bull sharks in any way.  The majority of the newborn or very young bull sharks were found in the freshwater area, whereas the much older bull sharks were found to be in the saltwater areas, as they had developed a much better tolerance for the salinity. The largest known bull shark was a female measuring 4 meters in length. Adult bull sharks have few natural predators. The bite force of a bull shark is 5914 Newtons, which is the highest for any fish, weight for weight.  The species has a distinct preference for warm currents. The Bull shark is also not as readily identified as is the white shark or the tiger shark, and so may be responsible for a large fraction of the of the attacks that go unassigned to species (ISAF 2018). (Branstetter and Burgess 1997). After the first initial contact, they continue to bite and tackle prey until they are unable to flee. Seeing scratches and other marks on a mature female which may be from the mating ritual is not uncommon. , Behavioral studies have confirmed that sharks can take visual cues in order to discriminate between different objects. published weight: 316.5 kg … They have been recorded in rivers hundreds of miles from the sea but are most commonly found in marine, estuarine environments close to shore (Simpfendorfer and Burgess 2009). After fitting the massive shark with an ID tag, they released her back into the deep blue. However, few freshwater human-shark interactions have been recorded. Revised by Lindsay French and Gavin Naylor 2018. The bull shark is one of the more likely shark species to attack humans. 9253 ); max.  The golf course has capitalized on the novelty and now hosts a monthly tournament called the "Shark Lake Challenge". The heaviest recorded bull shark was 694 lb (315kg) Bull sharks do not have an interdorsal ridge. Upper jaw teeth of the bull shark are broad, triangular, and heavily serrated. The bull shark (Carcharhinus leucas), also known as the "Zambezi shark" (informally "zambi") in Africa, and "Lake Nicaragua shark" in Nicaragua, is a requiem shark commonly found worldwide in warm, shallow waters along coasts and in rivers.  Crocodiles may be a threat to bull sharks in rivers as well. It has not yet been conclusively resolved. From there, weights are smaller and change according with the species. The largest recorded bull shark was a 4.0 m (13.1 ft) female. Capture for shark fin soup is a primary cause of the population decline of this species. Bull Shark Habitat and Behavior 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. Description. According to the International Game Fish Association (IGFA), the largest bull shark caught on rod and reel weighed 771 lb. This is because they prefer to swim in shallow waters similar to us.  It can live in water with a high salt content as in St. Lucia Estuary in South Africa. Further research is necessary to better characterize its biological, ecological, and fisheries significance (Simpfendorfer and Burgess 2009). Learn what else we are doing to keep you safe. http://dx.doi.org/10.2305/IUCN.UK.2009-2.RLTS.T39372A10187195.en. Some skates (Rajidae), smooth dogfishes (Triakidae), and sandbar sharks (Carcharhinus plumbeus) regularly enter estuaries. They are opportunistic feeders targeting bony fishes, sharks, turtles, birds, dolphins and terrestrial mammals. They can be found attached to the body surface, often in the axil region of the pectoral and pelvic fins. , The bull shark is a solitary hunter, though may briefly pair with another bull shark to make hunting and tricking prey easier. It is known for its aggressive nature, and presence in warm, shallow brackish and freshwater systems including estuaries and rivers. A 7.5 foot (2.25 m) white shark was captured two days after the last attack, 4 miles (6.4 km) from the mouth of Matawan Creek, and allegedly contained human remains in its stomach. Adults usually weigh between 200 and 500 pounds (91 to 227 kilograms). , The male bull shark is able to begin reproducing around the age of 15 years while the female cannot begin reproducing until the age of 18 years. The bull shark is able to discriminate between colors of mesh netting that is present underwater.  They stayed at the mouth of the river independent of the salinity of the water. Because it lives in estuarine and inshore regions, close to human populations, it is vulnerable to human impact. No, bull sharks do not make good pets. There are 31 species of bull shark known in Australia. Food Habits This page was last edited on 24 November 2020, at 14:05. (ISAF 2018). The bull shark's caudal fin is longer and lower than that of the larger sharks, and it has a small snout, and lacks an interdorsal ridge. A female bull shark can reach an average length of 7.9 feet and an average weight of 290 pounds. Bright yellow mesh netting was found to be easily avoided when it was placed in the path of the bull shark. The largest tiger shark captured weight was 1,450 pounds. , In 2008, researchers tagged and recorded the movements of young bull sharks in the Caloosahatchee River estuary. The inshore nursery grounds are particularly at risk. One was reportedly seen swimming the flooded streets of Brisbane, Queensland, Australia, during the 2010–11 Queensland floods.  In the Pacific Ocean, it can be found from Baja California to Ecuador. Anterior teeth are erect and nearly symmetrical, while posterior teeth become more oblique in shape. Bull sharks are large and stout, with females being larger than males.  This bottleneck may have separated the bull shark from the rest of the Elasmobranchii subclass and favored the genes for an osmoregulatory system. Juvenile bull sharks enter low salinity estuaries and lagoons as readily as adults do and use these shallow areas as nursery grounds. This results in a large influx of water across the gills due to osmosis and loss of sodium and chloride from the shark's body. Length at first maturity / Size / Weight / Age Maturity: L m 193.0 , range 180 - 230 cm Max length : 360 cm TL male/unsexed; (Ref. Length/Weight Conversions for Marine Fishes of Texas. Adult female bull sharks average 2.4 m (7.9 ft) long and typically weigh 130 kg (290 lb), whereas the slightly smaller adult male averages 2.25 m (7.4 ft) and 95 kg (209 lb).  The freshwater acts as a protective area where the young are able to grow and mature without the threat of larger sharks preying on the younger bull sharks. Snout is much shorter than width of mouth and bluntly rounded. 1995) and maximum reported weight is 316.5 kg (~698 pounds) (IGFA 2001). The bull shark does not rear its young; the young bull sharks are born into flat, protected areas. , Bull sharks mate during late summer and early autumn, often in freshwater or in the brackish water of river mouths. , Bull sharks are able to regulate themselves to live in either fresh or salt water. It is found to a depth of 150 m (490 ft), but does not usually swim deeper than 30 m (98 ft). Its genus, Carcharhinus, also includes the sandbar shark, which is not capable of osmoregulation.  In the Arabian Sea, off the coast of Fujairah in the United Arab Emirates, a pregnant shark weighing 347.8 kg (767 lb) and measuring 3 m (9.8 ft) long was caught in the Arabian Sea was caught in February 2019, followed by another specimen weighing about 350 kg (770 lb) and measuring about the same in length, in January 2020.. In 1961, following specimen comparisons, taxonomists synonymized them. The IUCN is a global union of states, governmental agencies, and non-governmental organizations in a partnership that assesses the conservation status of species. Normally, sharks eat in short bursts, and when food is scarce, sharks digest for a much longer period of time in order to avoid starvation. This was found to be the reason that sharks are attracted to bright yellow survival gear rather than ones that were painted black. Bull Sharks have a total length between 7’-11.5” (2.1-3.5 m) and an overall weight in the range of 400-700 lb (181-318 kg). It is known that bull sharks inhabit areas off the coast of Florida, and there have been reports of bull sharks getting close enough to the coast to bite humans, since the bull shark is a territorial animal, which encourages aggressive behavior. The bull shark is diadromous, meaning they can swim between salt and fresh water with ease. The female bull shark can reach a weight of 500 pounds and a length of 5 feet. Domestication. One way the bull shark is able to conserve energy is that when the tidal flow changes, the bull shark uses the tidal flow in order to conserve energy as it moves downriver. (http://www.flmnh.ufl.edu/fish/gallery/descript/bullshark/bullshark.htm) A population in Lake Nicaragua (Central America) was once thought to be landlocked, but it was subsequently determined that they gain access to the ocean through a system of rivers and estuaries. Froese, Rainer and Pauly, Daniel, eds. Elasmobranchs' ability to enter fresh water is limited because their blood is normally at least as salty (in terms of osmotic strength) as seawater through the accumulation of urea and trimethylamine oxide, but bull sharks living in fresh water show a significantly reduced concentration of urea within their blood. Males can reach 200 pounds and 7 feet in length. Bull sharks have small eyes relative to most other carcharhinid sharks which suggests that vision may not be as important for this species which often occurs in turbid waters. Distinctive Features In the western Atlantic they commonly feed on mullet, tarpon, catfishes, menhaden, gar, snook, jacks, mackerel, snappers, and other schooling fish. Bull sharks have a bite force up to 5,914 newtons (1,330 lbf), weight for weight the highest among all investigated cartilaginous fishes. The young are about 70 cm (27.6 in) at birth. 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