The world of Pokémon is filled with tons of water-types that trainers love; it’s a bit surprising there isn’t an aquarium where you can go to see them all. This is likely because many water-types would be near impossible to keep in captivity. A single battle could destroy a whole section of an aquarium, and you would constantly have to worry about some of them escaping to bother tourists.

Not only that, but there are several water-types that would be a complete nightmare to try to keep in a tank. The ten Pokémon listed below would never be able to be kept in an aquarium.

10 Wailord

Wailord is a massive water-type that wouldn’t be that easy to fit inside. Even if you could use a Pokeball to move one into an aquarium maintaining its tank would be a nightmare at best, simply because of the space, you would need.

Wailord would most likely be way too much of a hassle to ever keep in captivity, especially considering the amount of money the enclosure would take to run.

9 Kyogre

Keeping any legendary Pokémon in an aquarium seems like a bad idea, but this one can literally flood the world. It would be a bad day for the aquarium staff if Kyogre wasn’t content with his housing and care level.

Kyogre is able to summon catastrophic rain and would be a huge threat to whatever country decided to try and keep him in a tank.

8 Greninja

Greninja is a pretty nimble creature that honestly would probably escape his tank each and every day. Even if they did manage to provide a proper environment, it would have to be filled with a ninja course to keep him happy.

Greninja probably wouldn’t be able to live in an aquarium happily and would escape within a few days.

7 Gyrados

Anyone who has played the Gen II games knows about the Lake of Rage. Gyrados can easily be driven into a fit by sounds or just being treated the wrong way. It’s highly likely that a Gyrados would eventually bust out of its enclosure with ease.

Gyrados would likely be a huge safety hazard to the staff and the trainers who come to observe him.

6 Palkia

Palkia is part dragon type and helps to stabilize space. He doesn’t live in the ocean but in a spatial rift that humans couldn’t possibly recreate. Housing him comfortably would be impossible, and he would most likely just phase-out of this plane.

Palkia would never work in an aquarium, and trying to create a suitable space for it would be a waste. You even run the risk of destabilizing space.

5 Volcanion

Volcanion is an incredibly powerful Pokémon that is best left alone. The Pokedex states that it has the power to wipe out an entire mountain. It would be incredibly risky to try to convince Volcanion to stay in a tank.

One wrong move and the aquarium, along with anything around it, would be completely wiped out. There is also the fact that he is always blowing out hot steam, which would make touching the water he is in incredibly dangerous.

4 Kabutops

Kabutops is an ancient creature that probably has incredibly specific needs. It is incredibly vicious and hunts it’s prey down at fast speeds. It likes to suck the innards out of its prey, making it a brutal killer and dangerous to care for.

Kabutops is a creature that is best left as a fossil; it would likely only cause a huge hassle in an aquarium.

3 Suicune

Suicune is another legendary water-type that takes the shape of a dog. Suicune is known for being elusive and incredibly hard to catch. When one is cornered, they can easily escape from whoever corned them.

It’s very likely that Suicune would never even be caught in the first place. Suicune also has the ability to create a thick fog that would make catching it even harder.

2 Slowking

Slowking is a highly intelligent water-type that can actually talk. Keeping one in captivity would most likely bore it, and Slowking would eventually find a way to escape. The create is able to use abilities like trick room, which could confuse staff.

It would only be a matter of time before Slowking planned and stopped being lazy enough to actually escape from the aquarium.

1 Jellicent

Jellicent is beautiful, but it is also a ghost-type that would easily be able to slip out of its enclosure. It is also known for trying to pull people to their death, which would be a huge safety risk, chances are it may even be able to phase out of the tank.

Jellicent isn’t made to be kept in an aquarium and would likely escape pretty quickly if not observed round the clock.

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