Shedd Aquarium’s newest rockhopper penguins have been named Douglas (foreground) and Pico. Shedd Aquarium/Brenna Hernandez Share Shedd Aquarium has named its two newest rockhopper penguins ...

Plus, the lights dim in the aquarium for a unique experience. – Elizabeth Von Tersch, Senior Editor Shedd Aquarium is one of the world's largest indoor aquariums, housing around 32,000 creatures.