Sea lampreys are the Great Lakes' biggest predators. They attach to valuable fish and feed on their victims blood and body fluids.
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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.
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.
In Lake Superior, near the Presque Isle River, the creature is called Pressie. Over the past 400 years, there have been numerous sightings of Pressie. In one famous published story, a copper prospector came across the creature in an underwater cave in Lake Superior.
AP'S ASSESSMENT: False. Bull shark sightings have been confirmed in the Mississippi River as far north as Alton, Illinois, but reports of the sharks being found in the Great Lakes are either hearsay or hoaxes, multiple experts told The Associated Press.
Siscowet lake trout, kiyi, deepwater sculpin, round goby, crayfish, shrimp, and other invertebrates live at the bottom of Lake Superior. Some plants like algae and seaweed also grow at these depths.
Lake Erie is Dead Of all of the Great Lakes, Lake Erie had become predominantly polluted by the 1960s, largely due to the heavy industrial presence along its shores.
With the warm winter we have had, the whales are well fed and very active. We've actually had a few whales jump over some of our groups today! We have confirmed sightings of some orcas near humpbacks near the Duluth pier, orcas Split Rock, and even some bull sharks circling the wreck of the Maderia.
About a billion years ago, a fracture in the earth running from what is now Oklahoma to Lake Superior generated volcanic activity that almost split North America. Over a period of 20 million years, lava intermittently flowed from the fracture.
Lake Superior is generally calm and easily paddled between early June and mid-August. Mornings tend to be best for paddling, but it is not unusual to have a glassy calm for days on end.
Bull SharksWith a unique ability to tolerate low salinity levels, it can thrive in diverse environments. Robust and aggressive, Bull sharks can inhabit unsuspecting areas, including freshwater lakes. Their preference for shallow waters, sometimes frequented by humans, can lead to occasional misunderstandings.