Although they can spend long periods of time in freshwater, it is doubtful that they spend their entire lives in such a habitat. Also river systems and some freshwater lakes. Conservation Status: Safe for Now Bull Shark. They cope with freshwater by lowering the urea content in their tissues and removing excess water from their bodies as very dilute urine. Other names include the shovelnose, freshwater whaler, square-nose, river, slipway, ground, and cub shark. While juveniles prefer bony fishes, the preference of adults is for cartilaginous fishes such as rays and other sharks, especially juvenile sand sharks that they seek out in shallow nursery grounds.

Geographic Distribution. On the Pacific coast, where there is no commercial or recreational fishing of this species, there are no management measures. In company with the great white and tiger sharks, they are one of the top three sharks implicated in unprovoked fatal attacks throughout the world. The rounded eyes of these sharks are small compared to those of other gray sharks. Depending on the aquarium, the success of keeping these sharks in captivity varies. Populations are found in several lakes, among them Lake Nicaragua, where they breed and were once thought to be landlocked. The Aquarium of the Pacific’s mission is to instill a sense of wonder, respect, and stewardship for the Pacific Ocean, its inhabitants, and ecosystems. The bull shark has numerous common names, many depending on its geographic location.

Zebra Shark Stegastoma fasciatum. The dark tips on the fins of juveniles fade as the sharks mature. Bull Shark Carcharhinus leucas.

Tropical and subtropical coastal waters worldwide. Habitat .

Bull sharks are well known for their ability to live in salt, brackish, and freshwater.

Single individuals are found in the brackish water of the Indian River system, 3000 km (1864 mi) up the Mississippi River to Illinois, and as far inland as 3,500 km (2175 mi) up the Amazon. After a gestation period of 10-11 months, the female bull shark moves into an estuary where she delivers 1-13 live, free-swimming pups. Tropical and subtropical coastal waters worldwide. However, it has been determined that they find their way to the Caribbean via rivers and estuaries. Leopard Shark Triakis semifasciata. Bull sharks are robust-bodied with a blunt, rounded snout. Grey Reef Shark Carcharhinus amblyrhynchos. They rarely show themselves at the water’s surface.

Aquarium of the Pacific - Online Learning Center - Species Print Sheet. This shark is no longer on exhibit at the Aquarium of the Pacific.

The maximum length of bull sharks is believed to be about 3.5 m (11.5 ft) and the maximum weight, 230 kg (507 lb). Carcharhinus leucas Cartilaginous Fishes • Sharks

The average length of males is 2.3 m (7.5 ft) with a weight of 95 kg (209 lb). Migrating back and forth among these waters, the gills, rectal glands, blood, hormone system, and kidneys of these sharks are involved in a complex process called osmoregulation.

Whitetip Reef Shark Triaenadon obesus.

Their extensive diet includes many prey items: bony fishes, turtles, crustaceans, cephalopods, marine mammals, birds, mollusks, and almost anything else they find, including garbage.

Commercial and recreational fishing regulations are in place for bull sharks on the U.S. Atlantic coast where they are included in the larger coastal shark management group, which is overfished. These sharks usually breed in the ocean and in estuaries, but there is evidence that mating can take place in freshwater as well. Juveniles stay in estuaries and shallower coastal waters, gradually venturing out into deeper waters as they mature.

This shark is no longer on exhibit at the Aquarium of the Pacific. At this age, males measure 1.6-2.3 m (5.2-7.4 ft) in length, and females 1.8-2.3 m (5.9-7.5 ft). (562) 590-3100. Then they can accelerate to a swimming speed of 19 km/hr (11.8 mph). However, because of their habitats in areas heavily impacted by human activity, destruction of their nursery grounds by development, target and bycatch in many inshore fisheries, and popularity as a recreational fish, they may move to the threatened list. They are considered by many to be more dangerous than the great white because of their preferred habitat—shallow shoreline areas and river mouths, where there is human activity.

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The second fin is about one third the height of the first fin. They are common in the Gulf of Mexico waters off Florida’s coast. On the east coast of the United States, bull sharks migrate as far north as Massachusetts when the waters are warm, returning south to subtropical and tropical coastal waters as the water becomes cooler. Females are slightly larger than males, averaging 2.4 m (8 ft) in length and 130 kg (285 lb) in weight.

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