Tallgrass

HeartGold Generations areas

Route 41

Leads to Whirl Islands

Surfing

PokémonWhenLevelChance
RemoraidAny time15–2560%
WailmerAny time15–2530%
TentacoolAny time15–255%
SeelAny time15–254%
BasculinAny time15–251%

Old Rod

PokémonWhenLevelChance
MagikarpAny time1095%
TentacoolAny time105%

Good Rod

PokémonWhenLevelChance
TentacoolAny time2040%
MagikarpAny time2040%
ChinchouAny time2016%
ShellderAny time204%

Super Rod

PokémonWhenLevelChance
ShellderAny time4040%
ChinchouAny time4040%
TentacruelAny time4016%
LanturnAny time404%

Items

Tiny Mushroom · hiddenTiny Mushroom · hiddenTiny Mushroom · hiddenPP Up · hiddenTiny Mushroom · hidden

Trainers · 10

Swimmer♀ Kaylee

#90
BruxishLv 33Water Pulse, Aqua Jet, Aqua Tail, Psywave
SwannaLv 32Water Pulse, Roost, Defog, Aerial Ace
RelicanthLv 34Aqua Tail, Yawn, Rock Tomb, Harden

Swimmer♀ Susie

#91
LanturnLv 34Supersonic, Bubble Beam, Signal Beam, Discharge
LaprasLv 34Perish Song, Brine, Confuse Ray, Ice Shard

Swimmer♀ Denise

#92
SeelLv 22

Swimmer♀ Wendy

#94
HorseaLv 21Bubble, Smokescreen, Leer, Bubble Beam
HorseaLv 21Focus Energy, Smokescreen, Leer, Bubble Beam