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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A few even submitted the issue to Snopes.com, debunkers of urban legends, which investigated the issue last summer and pronounced that stories of whales in Lake Michigan are the result of “mistakes, pranks and hoaxes.”
whale sightings. Each year we report the movements of the whales on Lake Superior. The reports are sightings sent by residents and visitors along the North Shore of Lake Superior.
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.
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.
Little known to most New Yorkers is the fact that freshwater dolphins once thrived in waters of Lake Erie. The cool waters kept the size of these dolphins uniquely small compared to their ocean swimming cousins - evidence suggest adults rarely reached 24 inches in length.
In only one case was a shark actually found in Lake Michigan, and it was proven to be a hoax. April 25, 1969. Two coho salmon fishermen pulled a 29-inch (73-centimeter) shark from the water around two miles off the coast of Milwaukee.
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.
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.
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.
Lake Nicaragua is one of the largest freshwater lakes in the Americas and bull sharks travel up the San Juan River and through a series of eight rapids in a similar manner to salmon to reach the lake, where they may stay for several years.
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.
Species native to the lake include banded killifish, bloater, brook trout, burbot, cisco, lake sturgeon, lake trout, lake whitefish, longnose sucker, muskellunge, northern pike, pumpkinseed, rock bass, round whitefish, smallmouth bass, walleye, white sucker and yellow perch.