515 ILCS 5/15-80: Otter trawl.

It is unlawful for any person to use any otter trawl or modified bag seine used in the manner of an otter trawl in any of the waters within the jurisdiction of this State. In the waters of Lake Michigan under the jurisdiction of the State of Illinois, however, an otter trawl or other developmental commercial fishing gear operated by suitable boat or launch may be used in accordance with regulatory provisions provided by the Department as a cooperative measure with other States bordering the Great Lakes, including United States and Canadian governmental agencies.