CHICAGO (CBS) -- Get ready to experience the underwater world...for free!
Thursdays this month, the Shedd Aquarium is opening its doors to all Illinois residents at no cost.
All you need is a valid ID from the state. To let as many people as possible enjoy the aquatic experience, the Shedd is extending its hours on those days from 9:00 a.m. to 9:00 p.m.
You do need to get tickets in advance, which you can get either online or by calling ahead.
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