What shark can swim in fresh and salt water?

Answer 1

Only 43 species of elasmobranch in ten genera and four families have been reported to enter fresh water, of which the bull shark is the best known. Other species that enter rivers include the stingrays (Dasyatidae,Potamotrygonidae and others) and sawfish (Pristidae). Some skates (Rajidae), smooth dogfishes (Triakidae), and sandbar sharks (Carcharhinus plumbeus) regularly enter estuaries. The ability of elasmobranchs 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 reduce the concentration of these solutes by up to 50%. Even so, bull sharks living in fresh water need to produce twenty times more urine than those in salt water.[5] Initially, scientists thought the sharks in Lake Nicaragua belonged to an endemic species, the Lake Nicaragua shark (Carcharhinus nicaraguensis). In 1961, following comparisons of specimens, the Lake Nicaragua shark was synonymized with the bull shark.[12] It had been presumed that the sharks were trapped within the lake, but this was found to be incorrect in the late 1960s, when it was discovered that they were able to jump along the rapids of the San Juan River (which connects Lake Nicaragua and the Caribbean Sea), almost like salmon.[13] As evidence of these movements, bull sharks tagged inside the lake have later been caught in the open ocean (and vice versa), with some taking as little as 7-11 days to complete the journey.[12] Bull sharks have been caught approximately 900 miles up the Mississippi River, and have been observed approximately 2,500 miles up the Amazon River.[14]

This information is quoted from www.wikipedia.org, I did not write anything of this not did I personally gather the accumulative information to come to these scientific conclusions, i hereby do not take credit for this information, if you wish to know more about bull sharks, please visit wikipedia.org, its usually a good place for information, especially in biology. Thank you:)

Answer 2

The Bull Shark can swim in both fesh water and salt water.

Answer 3

bullshark

Answer 4

Greta white shark