Generation 1 · Pokédex profile
Jellyfish Pokémon
Pokédex entry
It lives in complex rock formations on the ocean floor and traps prey using its 80 tentacles. Its red orbs glow when it grows excited or agitated.
Battle data
Conditional evolutions can require additional game-specific prerequisites beyond the displayed method.
| Method | Location | Level | Evidence |
|---|---|---|---|
| Fishing | Abandoned Ship Hidden Floor Corridors | Lv. 20–35 | Source-indexed, not individually verified |
| Fishing | Abandoned Ship Rooms B1f | Lv. 20–35 | Source-indexed, not individually verified |
| Fishing | Cianwood City | Lv. 40 | Source-indexed, not individually verified |
| Fishing | New Bark Town | Lv. 40 | Source-indexed, not individually verified |
| Fishing | Olivine City Port Outside | Lv. 40 | Source-indexed, not individually verified |
| Fishing | Route 26 | Lv. 40 | Source-indexed, not individually verified |
| Fishing | Route 27 | Lv. 40 | Source-indexed, not individually verified |
| Fishing | Route 41 | Lv. 40 | Source-indexed, not individually verified |
| Fishing | Route 47 | Lv. 40 | Source-indexed, not individually verified |
| Fishing | Union Cave B2f | Lv. 40 | Source-indexed, not individually verified |
| Grass / ground | Whirl Islands Descent | Lv. 26–28 | Source-indexed, not individually verified |
| Surfing | Abandoned Ship Hidden Floor Corridors | Lv. 30–35 | Source-indexed, not individually verified |
| Surfing | Abandoned Ship Rooms B1f | Lv. 30–35 | Source-indexed, not individually verified |
| Surfing | Cherrygrove City | Lv. 20–24 | Source-indexed, not individually verified |
| Surfing | Cianwood City | Lv. 20–24 | Source-indexed, not individually verified |
| Surfing | Five Island | Lv. 35–40 | Source-indexed, not individually verified |
| Surfing | Five Island Meadow | Lv. 35–40 | Source-indexed, not individually verified |
| Surfing | Five Island Memorial Pillar | Lv. 35–40 | Source-indexed, not individually verified |
| Surfing | Five Island Resort Gorgeous | Lv. 35–40 | Source-indexed, not individually verified |
| Surfing | Five Island Water Labyrinth | Lv. 35–40 | Source-indexed, not individually verified |
| Surfing | Four Island Icefall Cave Back | Lv. 35–45 | Source-indexed, not individually verified |
| Surfing | Olivine City | Lv. 20–24 | Source-indexed, not individually verified |
| Surfing | Olivine City Port Outside | Lv. 20–24 | Source-indexed, not individually verified |
| Surfing | One Island | Lv. 35–40 | Source-indexed, not individually verified |
| Surfing | One Island Kindle Road | Lv. 35–40 | Source-indexed, not individually verified |
| Surfing | One Island Treasure Beach | Lv. 35–40 | Source-indexed, not individually verified |
| Surfing | Route 26 | Lv. 30–34 | Source-indexed, not individually verified |
| Surfing | Route 27 | Lv. 20–24 | Source-indexed, not individually verified |
| Surfing | Route 32 | Lv. 20–24 | Source-indexed, not individually verified |
| Surfing | Route 34 | Lv. 20–24 | Source-indexed, not individually verified |
| Surfing | Route 40 | Lv. 22–26 | Source-indexed, not individually verified |
| Surfing | Seven Island Tanoby Ruins | Lv. 35–40 | Source-indexed, not individually verified |
| Surfing | Seven Island Trainer Tower | Lv. 35–40 | Source-indexed, not individually verified |
| Surfing | Six Island Green Path | Lv. 35–40 | Source-indexed, not individually verified |
| Surfing | Six Island Outcast Island | Lv. 35–40 | Source-indexed, not individually verified |
| Surfing | Six Island Water Path | Lv. 35–40 | Source-indexed, not individually verified |
| Surfing | Three Island Bond Bridge | Lv. 35–40 | Source-indexed, not individually verified |
| Surfing | Union Cave B2f | Lv. 20–24 | Source-indexed, not individually verified |
| Surfing | Whirl Islands B2f | Lv. 20–24 | Source-indexed, not individually verified |
| Surfing | Whirl Islands B3f | Lv. 20–24 | Source-indexed, not individually verified |
| Surfing | Whirl Islands Descent | Lv. 20–24 | Source-indexed, not individually verified |
| Scripted battle candidate | Route 41 | Lv. 100 | Source-indexed, not individually verified |
Rare grass and Surfing encounters inherit the first native slot's level range. Supplemental fishing follows each rod's native slots. These ranges exclude Lure effects and randomizer replacements; eligibility restrictions still apply.
Data source: configured Grand Anthology Gen 1–9 species, forms and abilities. The website uses frame-cropped copies of the game's existing Pokémon sprites, which remain franchise/artist-owned assets. Some alternate forms use labeled default-form artwork when their individual sprite is unavailable. See acknowledgments for credits.