I like Male Jellicent a lot, and Samurott, Basculin, and Carracosta are kinda coolLooking at the list of Water Pokemon it dosent seem as though there is as much of a selection as in other generations, I could be wrong though, Im not crazy about the 5th Gen water types.
Swanna is my HM slave.I tried to make Panpour my Water-type member, but that was a mistake. I was glad to discover Ducklett/Swanna.
Lamesauce.Weak sauce. I don't think I actually had a water type on my team o.o... I'm trying to think who I had. Serperior, D'Artagnan, Zebstrika, Egyptian coffin guy, Chandelure, and someone that I can't remember who had to know how to surf. I think I actually just used Basculin as an HM slave.
My Panpour Mr. Bubbles is currently on my team since a lot of the Pokemon I chose to have on my final team are available later in the game. He'll be a HM slave once I get Tirtouga.
Buy it somewhere else.
I have no idea if that's cheap or expensive xD