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Are there any sharks in the Great Lakes?

While there have been past “sightings,” most have turned out to be pranks or misidentifications. The reality is that the largest of the Great Lakes (Lake Superior and Michigan) are extremely deep lakes that are too cold for sharks.



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Two Coho fishermen pulled a 29-inch shark from Lake Michigan about two miles off the Milwaukee shore on April 25, 1969. The shark was dead, but for several days fishermen in the area were uneasy.

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There have been no confirmed sightings of bull sharks in the Great Lakes region. While bull sharks are known to inhabit freshwater bodies, they are primarily found in warm, coastal waters and estuaries.

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Alligators are rarely found in the Great Lakes. Although some alligators thrive in freshwater, it's just too cold in the north for them to survive. They don't typically live farther north than North Carolina. It's unclear how the alligator arrived to Lake Michigan.

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The most dangerous predator in the Great Lakes is the sea lamprey, which was actually introduced as an invasive species. Primarily, it goes after a sports fish called the lake trout, often wounding them as they kill them off. It is also attracted to the blood and bodily fluids of any creature.

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Lake Nicaragua is the only freshwater lake containing oceanic animal life, including sharks, swordfish, and tarpon. More than 40 rivers drain into the lake, the largest being the Tipitapa River.

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Lake sturgeons are the biggest fish in the Great Lakes.

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Are there sharks in Lake Tahoe? No, there are no sharks in Lake Tahoe.

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No shark reports have been scientifically documented in the lake. The Illinois River has seen at least one documented case. Dams now keep any wandering sharks from entering the river.

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The health of the waters of the Great Lakes can be measured in many ways, but one of the most unusual is by observing the health of the small population of beluga whales that live in the estuary of the St. Lawrence River.

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Lake Michigan is generally clean and safe for swimming but it can become contaminated with harmful bacteria.

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At the deepest measured point, Lake Superior is 1,332 feet, around a quarter-mile straight down. Again, comparing it to the next deepest point in another Great Lake, Lake Michigan comes in second with a depth of 925 feet.

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You won't find much in the way that will leave you wanting to stay out of the waters here in the Great Lakes. The description of the biggest predator in the Great Lakes may drive you to at least do it during the day if anything... Michigan's biggest predator in the Great Lakes is a Sea Lamprey.

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The sea lamprey is an invasive species living in Canada's Great Lakes that had been kept under control for decades - until now. Erica Vella explains how the pandemic fuelled a population spike among the “vampire fish,” and what's being done to stop them.

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Lake Superior is the world's largest freshwater lake by area (31,700 mi2 /82,100 km2). It is also the coldest and deepest of the Great Lakes, with a maximum depth of 406 meters (1,332 feet). By most measures, it is the healthiest of all the Great Lakes.

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The average underwater visibility of Lake Superior is about 8 metres or 27 feet, making it the cleanest and clearest of the Great Lakes.

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These lakes are the perfect backdrop for swimming, boating, and other water-related activities. But there can be more danger in these Great Lakes waves than what you'd find in the ocean. The Great Lakes are more than capable of generating waves over 10 feet high, despite being smaller than our oceans.

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