Sunshine Aquarium is a must-visit attraction for families and animal lovers. Located in Ikebukuro's Sunshine City shopping complex, it is home to 750 species and 37,000 fish across more than 80 tank exhibits. One of its unique features is the Aqua Ring, a massive tank shaped like a donut that allows you to view sea lions and penguins from all angles. Aside from a variety of entertaining shows, you may also see non-marine animals like giant manta rays, sunfish, and deep-water spider crabs.