Put on your best Halloween costume and head to the Shedd for a Spooky Seas slumber party. Everyone will also enjoy exploring the aquarium, participating in a pumpkin scavenger hunt and taking in an aquatic show. You can sleep next to the fishes or head home after the evening activities have wrapped. Children must be at least 5 years old to spend the night. The fun starts Friday at 6:30pm and wraps up Saturday at 8:30am.