Milotic, followed closely by Kingdra and Blastoise.
SoulSilver FC: 1334-2716-6164
Platinum FC: 1591-7683-8872
Probably Lapras, cool design and does pretty well in battle, it's quite bulky, which I like.
Vaporeon, but Milotic is a close second.
They will make pigs of you all and they will bury their snouts into your ribs and they will eat your hearts.
Vaporeon has been my favorite Pokémon since 1998.
However, I also adore Kingdra and Milotic (until I'm fighting one).
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every day i'm tumblrin' | and when i'm not i'm writin'
Well, Piplup is my favorite pokemon in general, so I guess that would make it my favorite water type as well. Squirtle would be a close second.
Look Forward, Team Rocket!
Also I claim Piplup in the Claim a Pokemon thread =)