What is the biggest creature in the Great Lakes? What is the biggest predator in the Great Lakes?

The biggest creature in the Great Lakes is the Lake Sturgeon. This species is the largest fish in the lakes and has been around for millions of years. Individuals can reach lengths of over 6 feet and weigh nearly 100 pounds. The record for the largest Lake Sturgeon caught measured 15 feet in length and weighed 400 pounds.

Lake Sturgeons are unique in that they can live for more than 100 years and never stop growing, meaning they can get extremely big. Despite their size and somewhat intimidating appearance, Lake Sturgeons are quite docile. They spend most of their time feeding off the bottom of lakes with their vacuum-like mouths.

As for the biggest predator in the Great Lakes, that title goes to the Sea Lamprey. This eel-like fish grows up to 20 inches long and features a round, suction mouth circled with rows of horn-shaped teeth and a razor-sharp rasping tongue. Sea Lampreys attach to valuable fish and feed on their victims’ blood and body fluids. Their meal of choice is the much sought-after lake trout. Each individual lamprey is capable of killing up to 40 pounds of desirable fish over a 12-18 month feeding period.

So, while the Great Lakes are home to some truly impressive creatures, it’s important to remember that even the biggest and most fearsome inhabitants play a crucial role in maintaining the balance of these unique ecosystems.