IISG is in Humboldt Park today as part of a Science Chicago Labfest. Visitors to the park can play “Nab the Aquatic Invader!” and learn about Great Lakes invasive species.

Science Chicago is a year-long celebration organized by the Museum of Science and Industry. Here’s how the website describes Labfests:

LabFests! will take place in local parks, neighborhood libraries and fab locations all across the region all summer long. Get your “wow” on and get into it with hands-on science fun featuring interactive demonstrations, crafts projects, science and environmental activities with some of the region’s most popular museums, institutions and after school science organizations.

Today’s event in Humboldt Park runs from 11:00 a.m. to 3:00 p.m. For more information, including a map, click here.