Is It an Octopus? a 4-Year-Old Asks. No, a Shipwreck From 1871.
New York Times
Tim Wollak and his daughter Henley spotted a mysterious object on their boat’s sonar. Experts say they most likely discovered the George L. Newman, which sank during the Peshtigo fire in 1871.
https://www.nytimes.com/2023/12/18/us/shipwreck-lake-michigan.html