Water Team help?

[(Dusty<3)]

I'm starting a new game on my Emerald and was wondring if I could get some help on building an ALL WATER team. I know it's not good to have only one type but I'm doing this for fun! =3
I was thinking maybe:

Pelipper:
Ice Beam
Wing Attack
Steel Wing
Shock Wave

Sharpedo:
Crunch
Surf
Skull Bash
Earthquake

Wiscash:
Amnesia
Waterfall
Fissure
Toxic

Tentecruel:
Sludge Bomb
Hydro Pump
Barrier
Giga Drain

Lanturn:
Charge
Thunderbolt
Dive
Ice Beam

I can't decide on a final pokemon. I chose not to go with Swampert. So I'm thinking maybe Seaking.

If anyone knows how to make this team better *with moves or different pokemon* Please lend any advice you may have!

 

[FinalPaladin]

mmm i would say hav kingdra garados and milotic.keep swampert lanturn and wailord

 

[moments.]

I know this is in-game so moves don't really make all that much of a difference, but consider trying to get as much coverage as possible.. You have pretty good coverage it is just down to fine tuning.
Consider giving Sharpedo something instead of Skull Bash, just so you can do more damage over 2 turns really.

 

[luke]

If you would like some team help, trying posting the Simple Q&A topic in the Strategies and Movesets forum.