“According to the National Weather Service, there were seven fatalities and 14 rescues on the Great Lakes caused at least partially by currents in the water. Lake Michigan had the most incidents as is typically the case. There are a few reasons why Lake Michigan is the most dangerous year after year. First is the combination of highest population and one of the warmer waters. Second is the shape of the lake which makes it conducive to rip currents.This year did not have as many fatalities and rescues as compared to past years. The main reason for this was the colder summer keeping the number of swimmers down.While currents caused by rip tides are dangerous, the most often cited reason for a rescue is structural. Piers and other structures make dangerous currents and create locations for injuries.While the swimming season may be over, another very dangerous time on the Great Lakes is here. Fall is a season I’ve found to be most dangerous, especially on Saginaw Bay. Some duck hunters and fishers take unwise risks just to shoot a duck or catch a fish.”
Recent News
- Freshwater jellyfish may increase in numbers as Illinois and Indiana waters continue to warm
- Tomas Höök signing off as Illinois-Indiana Sea Grant director this summer
- Illinois-Indiana Sea Grant welcomes Stuart Carlton as the program’s new director
- Four Illinois and Indiana educators will set sail on Lake Michigan aboard EPA’s research ship
- Join IISG as a new pollution prevention outreach assistant
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Looking for a fun, hands-on way to engage your students this year? Check out our new curriculum about crayfish and freshwater ecosystems! This curriculum teaches students about the importance of native crayfish, the threats posted by invasive species, and the health of Great Lakes ecosystems. It includes 9 ready-to-use lesson plans, with one featuring our participatory science activity! All lessons are aligned with NGSS, CCSS, and CGLL Principles.
Download the curriculum and start exploring at InvasiveCrayfish.org/Crayfish-Curriculum
#CrayWeek #Crayfish #FreshwaterEcosystems #Curriculum #BackToSchool

When participating in a crayfish participatory science activity, be sure to snap plenty of photos of any crayfish you catch or observe. Not only is it a great way to capture the fun and excitement of the day, but it also helps document the species present. To ensure accurate identification by scientists, it’s important to provide clear photos from multiple angles. Dorsal (top), lateral (side), and ventral (underside) views of the crayfish should always be photographed.
To learn more about the specific features to highlight in your photos visit the link in bio or
InvasiveCrayfish.org/Management/#Community

Who says “Back to School” means back indoors? While the weather is still warm, take your students on an outdoor science adventure by exploring crayfish in your local waterways.
The Invasive Crayfish Collaborative invites grades 2-12 educators to take part in a hands-on participatory science activity. By catching, identifying, and reporting crayfish species in your area, students contribute valuable data that helps scientists better understand where native and invasive crayfish live.
Check out what other educators have found and get involved: inaturalist.org/projects/great-lakes-crayfish
