Johto and Kanto Gold/Silver section
Pokemon Gold and Silver Routes 19 and 20, Seafoam Islands Walkthrough
Routes 19 and 20, Seafoam Islands section of the complete Pokemon Gold and Silver walkthrough, with wild Pokemon, trainers, items, hidden items, trades, events, and boss data.
Surf the southern sea routes and reach Blaine's temporary Gym. This section is generated from pret/pokegold map, trainer, item, and encounter data for Pokemon Gold and Silver only.
Phase 15: Volcano Badge
Routes 19 and 20, Seafoam Islands
Surf the southern sea routes and reach Blaine's temporary Gym.
Source Maps
ROUTE_19, ROUTE_20, SEAFOAM_GYM
Wild Pokemon
Each area below has its own table, split by encounter method. Standard rows merge every source slot for a species and are shown per Gen II time window: morning 04:00-09:59, day 10:00-17:59, night 18:00-03:59. A rate spanning all three columns applies at any time; "—" means that species is absent in that window. Phone swarms temporarily replace the normal grass or Surf table, Rock Smash rows need cracked rocks broken, and Headbutt rows use the map's common/rare tree sets. Underlying slot odds: grass and cave 30/30/20/10/5/4/1; Surf 60/30/10; rod odds come from each fishing group's cumulative bite thresholds; Headbutt and Rock Smash odds are direct source percentages.
Route 19
| Pokémon | Games | Levels | Rate | Notes | ||
|---|---|---|---|---|---|---|
| Morning | Day | Night | ||||
| Surfing | ||||||
 Tentacool | GS | 30-35 | 90% | — | ||
 Tentacruel | GS | 35 | 10% | — | ||
| Fishing — Old Rod | ||||||
 Magikarp | GS | 10 | 35% | — | ||
 Krabby | GS | 10 | 15% | — | ||
 .Dratini 2 Old | GS | Lv. NaN-NaN | 0% | — | ||
| .Dratini Old | GS | Lv. NaN-NaN | 0% | — | ||
| .Gyarados Old | GS | Lv. NaN-NaN | 0% | — | ||
| .Lake Old | GS | Lv. NaN-NaN | 0% | — | ||
| .Ocean Old | GS | Lv. NaN-NaN | 0% | — | ||
| .Pond Old | GS | Lv. NaN-NaN | 0% | — | ||
| .Qwilfish Noswarm Old | GS | Lv. NaN-NaN | 0% | — | ||
| .Qwilfish Old | GS | Lv. NaN-NaN | 0% | — | ||
| .Qwilfish Swarm Old | GS | Lv. NaN-NaN | 0% | — | ||
| .Remoraid Old | GS | Lv. NaN-NaN | 0% | — | ||
| .Remoraid Swarm Old | GS | Lv. NaN-NaN | 0% | — | ||
| .Shore Old | GS | Lv. NaN-NaN | 50% | — | ||
| .Whirlislands Old | GS | Lv. NaN-NaN | 0% | — | ||
| Fishing — Good Rod | ||||||
| Krabby | GS | 20 | 55% | — | ||
| Magikarp | GS | 20 | 35% | — | ||
| Fishing — Super Rod | ||||||
| Krabby | GS | 40 | 90% | — | ||
 Kingler | GS | 40 | 10% | — | ||
Route 20
| Pokémon | Games | Levels | Rate | Notes | ||
|---|---|---|---|---|---|---|
| Morning | Day | Night | ||||
| Surfing | ||||||
| Tentacool | GS | 30-35 | 90% | — | ||
| Tentacruel | GS | 35 | 10% | — | ||
| Fishing — Old Rod | ||||||
| Magikarp | GS | 10 | 85% | — | ||
| Tentacool | GS | 10 | 15% | — | ||
| Fishing — Good Rod | ||||||
| Magikarp | GS | 20 | 35% | — | ||
| Tentacool | GS | 20 | 35% | — | ||
 Chinchou | GS | 20 | 20% | — | ||
| Fishing — Super Rod | ||||||
| Tentacruel | GS | 40 | 50% | — | ||
| Chinchou | GS | 40 | 40% | — | ||
 Lanturn | GS | 40 | 10% | — | ||
Trainers
| Route order | Trainer | Team | Reward | Optional / rematch note |
|---|---|---|---|---|
| Route 19 (9, 23) | Swimmerf Dawn | $170 | One-time trainer battle. | |
| Route 19 (13, 28) | Swimmerm Harold | $60 | One-time trainer battle. | |
| Route 19 (11, 17) | Swimmerm Jerome | $56 | One-time trainer battle. | |
| Route 19 (8, 23) | Swimmerm Tucker | $68 | One-time trainer battle. | |
| Route 20 (52, 8) | Swimmerf Nicole | $160 | One-time trainer battle. | |
| Route 20 (45, 13) | Swimmerf Lori | $160 | One-time trainer battle. | |
| Route 20 (12, 13) | Swimmerm Cameron | $68 | One-time trainer battle. |
Items, Hidden Items, And Events
No item balls, hidden items, fruit trees, NPC gifts, or in-game trades found for this section.
Boss Cards
No major boss card assigned to this section.
Completion Checklist
- Check every wild row before leaving Routes 19 and 20, Seafoam Islands; Gold/Silver version, time, rod, Headbutt, swarm, and static methods are separated.
- Clear trainer rows and phone/rematch contacts shown in the trainer table.
- Pick up item balls, hidden items, daily fruit trees, NPC gifts, trades, and static encounters listed for the section.
- Use any boss card here before advancing to the next section.