Route 108

Available Pokemon by surfing:
Tentacool
Wingull
Pelipper

Available Pokemon upon obtaining the National Dex:
Krabby
Frillish
Skrelp
Clauncher

Available Pokemon by fishing:
Old Rod
Magikarp
Tentacool

Good Rod
Magikarp
Tentacool
Wailmer

Super Rod
Wailmer

Available items:
Star Piece
Rare Candy