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What is the largest predator in Lake Michigan?

The Great Lakes Biggest Predator Michigan's biggest predator in the Great Lakes is a Sea Lamprey. In the very famous words of Randy Jackson, it's going to be a no for me dawg.



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The Lake Sturgeon - Michigan's Biggest Creature You may be a little startled if it decides to swim past your feet, as the Lake Sturgeon is rather big in size. On average, they can be anywhere between six and three feet in length. They will also weigh anywhere between 30-100lbs.

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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.

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The most renowned of these Great Lakes sea monsters supposedly resides in Lake Erie. Sightings of the lake monster Bessie were first made in the late 1700s but appeared again with some regularity in the 1980s. Bessie is described as being about 20 feet long, serpent-like but with appendages that resemble arms.

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The Dewey Lake Monster, also known as the Sister Lakes Sasquatch, in Michigan folklore, is purported to be an ape-like creature, similar to descriptions of Bigfoot, that was allegedly sighted in the summer of 1964 near Dewey Lake and Sister Lakes in Dowagiac.

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The Water Monster of Lake Erie Bessie, who is also called South Bay Bessie because of the location of the sightings, has been seen multiple times since the 1800's. It is said that she is covered in gray scales, has a large head, and is around 30 to 40 feet long.

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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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Invasive carp include bighead carp, black carp, grass carp and silver carp. Find out more about each of these species and about invasive carp in Michigan on each species' profile below.

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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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Dreyer is the only person who has swum the width of Lake Michigan between Wisconsin and Michigan, having swum from Two Rivers, Wisconsin, to Ludington, Michigan, in 1998. In the 2023 swim, he was attempting to beat his own record by swimming 25 miles further in the route from Milwaukee to Grand Haven.

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The lake's formation began 1.2 billion years ago when two tectonic plates moving in opposite directions left a giant scar—an event now known as the Midcontinent Rift. Less than 15,000 years ago, melting glaciers filled the giant basin, and Lake Michigan came to be. The lake's maximum depth is 925 feet.

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Lake sturgeon live longer than any other fish species in Michigan. Male lake sturgeon live an average of 55 years. Females live 80-150 years.

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There is an abundance of life and different creatures you might find in Lake Michigan. Whales just aren't one of them. See all of the animals you can find in the lake here.

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Lake Michigan is the third largest Great Lake and the fifth largest lake in the world. Bordered by Wisconsin, Illinois, Indiana and Michigan, it is the only Great Lake that lies entirely within the boundaries of the U.S.

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Well-known lake monsters include:
  • Mishipeshu, in Lake Superior, Canada and US.
  • Nessie, in Loch Ness, Scotland.
  • Morag, in Loch Morar, Scotland.
  • Lagarfljót Worm, in Lagarfljót, Iceland.
  • Ogopogo, in Okanagan Lake, Canada.
  • Lariosauro, in Lake Como, Italy.
  • Champ, in Lake Champlain, Canada and US.


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