Some sharks can spend considerable time in fresh water without any ill effects. Back in the mid-1800’s, before the lock and dam system was put in place blocking upriver migrations, shark were caught in commercial fisherman’s nets as far north as St. Louis with some regularity. I can remember reading about this and seeing several Civil War era pictures of sharks caught in this manner.
The Bull Shark has no problem going from salt water to fresh water. In fact…A bull shark killed a you boy in fresh water river somewhere in Florida not but a couple of years ago. By the way. The shark that takes mores lives per year is not the Great White. It’s the Bull Shark.
There is also a shark called ther Ganges shark that can move from salt to freshwater without ill effect. It is so named because in pre-colonial India, there was a (Hindu) ritual bathing in the Ganges where literally millions of people would wade into the river. The sharks would move up the river and turn it into a slaughter.
sounds like the Bull shark joins in on the Ganges river action!….. sounds like the bull shark swims up every major river in the world…… from what I was reading… they are comfortable in fresh water….. and yes… from what I read are considered the most dangerous shark in the world….
In India the Bull Shark cruises up the Ganges River where it has killed and attacked a large number of people. It also eats the corpses that the Indians float on the river. Many of these attacks have been wrongly blamed on the Ganges Shark, (Glyphis Gangeticus) a fairly rare species that is probably the only other shark that can live comfortably in saltwater or freshwater. Due to the large number of attacks that have occurred along the Ganges River, the Ganges Shark has a dreaded reputation in India.
In 1975 a ferry sunk in the Ganges-Brahmaputa delta and 190 crew and passengers were tipped into the water. Up to 50 of these were killed by sharks.