UPNetwork -> Pokédex -> Generation 3 -> Breeding Groups

Water 1 Group

007 - Mudkip - Water

008 - Marshtomp - Water/Ground

009 - Swampert - Water/Ground

019 - Lotad - Grass/Water

020 - Lombre - Grass/Water

021 - Lodicolo - Grass/Water

027 - Wingull - Water/Flying

028 - Pelipper - Water/Flying

032 - Surskit - Bug/Water

033 - Masquerain - Bug/Flying

055 - Marill - Water

056 - Azumarill - Water

129 - Corphish - Water

130 - Crawdaunt - Water/Dark

140 - Feebas - Water

141 - Milotic - Water

158 - Psyduck - Water

159 - Golduck - Water

173 - Spheal - Water/Ice

174 - Sealeo - Water/Ice

175 - Walrein - Water/Ice

176 - Clamperl - Water

177 - Huntail - Water

178 - Gorebyss - Water

179 - Relicanth - Water/Rock

180 - Corsola - Water/Rock

184 - Horsea - Water

185 - Seaking - Water

186 - Kingdra - Water/Dragon

209 - Squirtle - Water

210 - Wartortle - Water

211 - Blastoise - Water

247 - Poliwag - Water

248 - Poliwhirl - Water

249 - Poliwrath - Water/Fighting

255 - Slowpoke - Water/Psychic

256 - Slowbro - Water/Psychic

258 - Seel - Water

259 - Dewgong - Water/Ice

286 - Lapras - Water/Ice

293 - Omanyte - Water/Rock

294 - Omastar - Water/Rock

295 - Kabuto - Water/Rock

296 - Kabutops - Water/Rock

302 - Dratini - Dragon

303 - Dragonair - Dragon

304 - Dragonite - Dragon/Flying

313 - Totodile - Water

314 - Croconaw - Water

315 - Feraligatr - Water

331 - Politoed - Water

339 - Wooper - Water/Ground

340 - Quagsire - Water/Ground

344 - Slowking - Water/Psychic

365 - Mantine - Water/Flying