Why is there salt under the Great Lakes?
Why is there salt under the Great Lakes? There are some natural sources of chloride (an element found in salt) such as the ancient ocean that used to lie underneath Michigan. When that water evaporated, salt was left behind, which can seep into the deep reservoirs of our groundwater, streams and tributaries that feed into the Great Lakes.
Is it safe to swim in Lake Erie?
Currents in Lake Erie can be dangerous! Any current flowing faster than 2 mph is considered dangerous. Dangerous currents can exceed 5 mph — faster than an Olympic swimmer can swim.
What is the biggest fish in the Great Lakes?
Lake sturgeons are the biggest fish in the Great Lakes.
What predators live in the Great Lakes?
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.
Which is the cleanest Great Lake?
Lake Superior is the Cleanest and Clearest Great Lake Because of its somewhat isolated location and long cold winters, not much farming is done along Superior's shores. This means lower amounts of nutrients, sediments, and organic material are floating around the lake.
What Great Lake is not safe to swim in?
Lake Michigan The Great Lakes are all water bodies that swimmers should think twice about entering. Lake Michigan in particular is the roughest of the Great Lakes, and poses a major risk to those thinking of taking a dip. This body of water is often named the most dangerous lake in the United States.
Are there alligators in the Great Lakes?
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.
What is the unhealthiest Great Lake?
Lake Erie is the fourth-largest lake in North America (by surface area) and the eleventh-largest worldwide. It is the Great Lakes' southernmost, shallowest, and smallest by volume. By the 1960s, Lake Erie had become the most polluted of the Great Lakes, owing to the substantial industrial presence along its coasts.