What was found under Lake Michigan?

Mark Holley, a professor of underwater archaeology at Northwestern Michigan University, discovered a prehistoric structure about 40 feet below the surface of Lake Michigan in Grand Traverse Bay. Much like a smaller version of England's Stonehenge, these stones appeared to have been arranged deliberately.



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Sea lamprey, snapping turtles, and blue-green algae are some of Lake Michigan's most pesky and dangerous creatures.

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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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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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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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Approximately 118 miles wide and 307 miles long, Lake Michigan has more than 1,600 miles of shoreline. Averaging 279 feet in depth, the lake reaches 925 feet at its deepest point.

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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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In northeastern Ohio and Michigan folklore, Bessie is a name given to a lake monster in Lake Erie, also known as South Bay Bessie or simply The Lake Erie Monster.

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Chinook Salmon Oncorhynchus tshawytscha are the primary apex predators in pelagic Lake Michigan and patterns in their prey selection (by species and size) may strongly influence pelagic prey fish communities in any given year.

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In 2007, a row of stones paralleling an ancient shoreline was discovered by Mark Holley, professor of underwater archeology at Northwestern Michigan College. This formation lies 40 feet (12 m) below the surface of the lake. One of the stones is said to have a carving resembling a mastodon.

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1. Lady Elgin. Lady Elgin sank on September 8th, 1860, and the tragic event represents the greatest loss of life on open water on the Great Lakes. 300 people died when the 252-foot sidewheel steamship was rammed in a gale by the scooner Augusta.

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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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