Shedd Aquarium. Photo by Andrew Davis
Shedd Aquarium. Photo by Andrew Davis
American alligator. Photo copyright Shedd Aquarium/Brenna Hernandez
American alligator. Photo copyright Shedd Aquarium/Brenna Hernandez
Green sawfish. Photo copyright Shedd Aquarium/Brenna Hernandez
Green sawfish. Photo copyright Shedd Aquarium/Brenna Hernandez
Blackbird sign. Photo by Andrew Davis
Blackbird sign. Photo by Andrew Davis
Mantis shrimp sign. Photo by Andrew Davis
Mantis shrimp sign. Photo by Andrew Davis