Tonkatsu, deep fried pork cutlet, is no doubt one of my favorite Japanese foods. Tokyo offers lots of Tonkatsu restaurants. However, when we talk about personal recommendation, there are two places I would recommend. One is Katsukura in Shiodome, and the other one is Tonki in Meguro.
There is always something fascinating about the sea creatures and Seaworld is a good place to learn about them. It has a little of everything for everyone. The penguins, the sea lions (I love the show !), the polar bears, the manta rays, Shamu, Kraken (roller coaster), etc.
