Though the entrance fee may look slightly expensive, the aquarium is very artistic and pretty but also organised. The fish tanks are elaborated with different lights and decorations to create various atmosphere. It is entertaining and enjoyable.
The aquarium was quite small but did have some interesting things to see, most notable were the Jellyfish and Sharks. The highlight for me, however, was the aptly named Animals Enjoying Water section. This was home to Fur Seals and loads of Penguins. They seemed to be enjoying the water.
A very good aquarium, and a nice place to visit whilst waiting to see Tokyo Skytree.