Before going to the Skytree, we visited the Sumida Aquarium near the base. They had a ton of jellyfish in various displays.
There was also a stingray just chilling in the large tank.
But most of it was these smaller tanks with a specific set of aquatic life in them like these Garden Eels.
They also had some seals next to the penguins.
A6400 images below.
