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The Great Lakes are open to the ocean through the Gulf Of St. Lawrence and St. Lawrence River. The St. Lawrence River also has a very powerful current. Theoretically a shark could get into Lake Michigan through canals from the Mississippi or the ballast water from ocean going ships, but given the lakes low temperature all year round I doubt they would survive very long.

The Amazon River is a natural habitat for bull sharks and is directly open to them whereas the Great Lakes are both cold and difficult to enter. The restricted access and environment would mandate a compelling reason for bull sharks to migrate to the lakes and there really isn't any.

Additionally, no bull sharks have been spotted in the Saint Lawrence. Any bull shark that could enter the Great Lakes would die before reaching Lake Ontario.

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Q: Can a Bull Shark survive in Lake Ontario?
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Has there ever been a shark in Lake Ontario?

There have been no reports of shark sitings in Lake Ontario, even the bull shark hasn't been there. I wouldn't worry too much though as sharks tend to like warm water and Lake Ontario seems a little to far north for that to be an issue.


What kind of shark lives in the lake?

the bull shark


Did they find a Bull Shark in Lake Superior?

No.


What Carnivores live in Lake Michigan?

bull shark


Can a bull shark live in arkansas lake?

No. It is fresh water, and the shark will quickly die.


Why are there no sharks in Lake Ontario?

Sharks have evolved to survive in salt water and are usually found in the ocean. Lake Ontario is fresh water. And Niagara Falls prevents them from traveling to the lake. Actually, Niagara Falls is on the Niagara River which empties into Ontario from the west. The lake connects to the ocean via the St. Lawrence River on the east, so sharks could, in theory, enter Lake Ontario. They could get into the other lakes through the Welland Canal between Erie and Ontario or through canals from the Mississippi, but none have been reported much further north then St. Louis which is 1000 miles downriver. The lakes are young, formed when glaciers retreated about 12,000 years ago, which would limit shark adaptation to their environment. Given the cold temperature of the Great Lakes they wouldn't be a good habitat for sharks. The bull shark, which can tolerate fresh water, is primarily tropical. Bull sharks have been recorded as far north as Massachusetts which is roughly 200 miles east of Lake Ontario but would have to enter the lakes through the Gulf Of St. Lawrence which is very cold year-round. I would be very surprised if a bull shark or any other species would survive very long in Lake Ontario or the Great Lakes. One or two pups might get into the water from the ballast water of ocean-going vessels (although they now have to purge before entering the lakes) or be released from a home aquarium, but they wouldn't last very long.


Has a bull shark ever been found in table rock lake and when?

yes.


Any shark attacks at Lake Erie?

It seems that we could ask George Lawson, or any of his relatives, who would certainly know whether or not he was bitten by a shark. 1955 wasn't that long ago!


Has anyone found a bull shark in lakemead?

No. Lake mead is freshwater and bull sharks need salt water to live and reproduce. Also how would the shark get past the hoover dam.


Which is the largest lake in Ontario?

Toronto is located on the shore of Lake Ontario, one of the Great Lakes.


Is Ontario lake really in Ontario Canada?

Lake Ontario is bordered by both Ontario Canada and New York State. Lake Ontario is one of the 5 Great Lakes (Lake Ontario, Lake Huron, Lake Erie, Lake Michigan and Lake Superior)


Are bull sharks in Lake Michigan?

No, at least not naturally. Bull sharks need warmer weather to survive. In theory, a bull shark could swim up through the rivers and canals from the Gulf of Mexico, but it would quickly die in the normally frigid waters.