you can get Hippopotas in the maniac ruins.
you go to veilstone and go down to route 214 and there is a cave.
you have to catch some unown in the solaceon ruins first or he wont be far enough.
there is no such thing as a hippopotamus in pearl I think the question was supposed to be: "How do you get Hippopotas in Pokemon Pearl?" The answer is: You find it in Maniac Tunnel.
maniac tunnel, south of veilstone.
You have to let it evolve from a Hippopotas, which you can find at the Ruin Maniac's Cave
Hippopotas is a Ground type pokemon.
ruin maniac's cave route 214 near veilstone city
Hippopotas evolves into a Hippowdon.
Hippopotas evolves at Level 34.
go to veilstone city go down till you see a cave go in and walk around for a little bit.
Hippopotas is #449 in the national pokedex, and it is a Ground type Pokemon.
Hippopotas is known as the hippo pokémon. Hippopotas can be found in the Ruins Maniac's Tunnel or the Ruins Maniac's Cave. The Hippopotas at the Tunnel will be between the levels 22-25 and the Hippopotas from the Cave 22 or 23.
hippopotas
Hippopotas.