Today on Lake Michigan, people are finding turtles on the beach that normally are found upstream on the Grand River due to a flood upstream: painted turtles and huge snapping turtles. Best not to try and move a snapping turtle. They can break your arm with their powerful jaws.
In The Dynamic Great Lakes, Lake Erie and its algae problems are shown. The book is about all five Great Lakes and their connecting waters.
Below is a link to a National Geographic story about Lake Erie and its abundant algae.