East Gastrodon

Wild odds

• Full odds 1 in 4,096
• Mass outbreak up to 1 in 1,365 (cleared 60+ · outbreak species only)

Breeding odds

• Full odds 1 in 4,096
• Masuda method 1 in 683

• North Province (Areas One and Three)Wild

  The blue East Sea form lives on the eastern side of Paldea.

  Researched, awaiting review · checked 7 Oct 2026 · serebii.net

  Something wrong?

  Shiny: yes

Wild odds

• Full odds 1 in 4,096
• Mass outbreak 1 in 158 (outbreak species only)
• Massive mass outbreak 1 in 315 (outbreak species only)

• Cobalt Coastlands (Seagrass Haven)Wild

  Researched, awaiting review · checked 7 Oct 2026 · nintendolife.com

  Something wrong?

  Shiny: yes

Wild odds

• Full odds 1 in 4,096
• Poké Radar chaining up to 1 in 99 (chain 40+ · grass only)

Breeding odds

• Full odds 1 in 4,096
• Masuda method 1 in 683

• Routes 222, 224 and 230Wild

  The East Sea form lives on the eastern side of Mt. Coronet.

  Researched, awaiting review · checked 7 Oct 2026 · pokemondb.net

  Something wrong?

  Shiny: yes

Wild odds

• Full odds 1 in 4,096
• Brilliant aura (number battled) up to 1 in 585 (battled 500+ · brilliant aura spawns only)

Static encounter odds

• Full odds 1 in 4,096

Raid odds

• Full odds 1 in 4,096

Breeding odds

• Full odds 1 in 4,096
• Masuda method 1 in 683

• Route 9, Dusty Bowl, Giant's MirrorWild

  Researched, awaiting review · checked 7 Oct 2026 · serebii.net

  Something wrong?

  Shiny: yes

• Galar Mine No. 2Static encounter

  A fixed overworld encounter that always stands in the same spot. Every Gastrodon in Galar is the East Sea form.

  Researched, awaiting review · checked 8 Oct 2026 · rotomlabs.net

  Something wrong?

  Shiny: yes

• Wild Area Max Raid densRaid

  Appears in some Max Raid dens in the Wild Area.

  Researched, awaiting review · checked 7 Oct 2026 · serebii.net

  Something wrong?

  Shiny: yes

• Evolve ShellosEvolution

  East Sea Shellos evolves at level 30.

  Researched, awaiting review · checked 7 Oct 2026 · pokemondb.net

  Something wrong?

  Shiny: yes

Transfer to HOME closes in 102d 20h26 Feb 2027, 03:00 UTC · via Pokémon Bank

Wild odds

• Full odds 1 in 4,096
• SOS chaining up to 1 in 315 (chain 31+)

Breeding odds

• Full odds 1 in 4,096
• Masuda method 1 in 683

• Poni Wilds, Ancient Poni Path, Poni Breaker Coast and Exeggutor IslandWild

  Wild Gastrodon in Alola are reported to be the East Sea form.

  Researched, awaiting review · checked 7 Oct 2026 · pokemon.fandom.com

  Something wrong?

  Shiny: yes

Transfer to HOME closes in 102d 20h26 Feb 2027, 03:00 UTC · via Pokémon Bank

Wild odds

• Full odds 1 in 4,096
• SOS chaining up to 1 in 315 (chain 31+)

Breeding odds

• Full odds 1 in 4,096
• Masuda method 1 in 683

• Poni Wilds, Ancient Poni Path and Exeggutor IslandWild

  Alola only has the East Sea form.

  Researched, awaiting review · checked 7 Oct 2026 · pokemondb.net

  Something wrong?

  Shiny: yes

Transfer to HOME closes in 102d 20h26 Feb 2027, 03:00 UTC · via Pokémon Bank

Breeding odds

• Full odds 1 in 4,096
• Masuda method 1 in 683

• Evolve ShellosEvolution

  Level 30; East Sea Shellos keeps its colouring.

  Researched, awaiting review · checked 7 Oct 2026 · serebii.net

  Something wrong?

  Shiny: yes

Transfer to HOME closes in 102d 20h26 Feb 2027, 03:00 UTC · via Poké Transporter → Pokémon Bank

Breeding odds

• Full odds 1 in 8,192
• Masuda method 1 in 1,365

• Evolve ShellosEvolution

  Shellos evolves at level 30; East Sea Shellos is traded by Curtis, who only appears for a female player character.

  Researched, awaiting review · checked 7 Oct 2026 · pokemondb.net

  Something wrong?

  Shiny: yes

Transfer to HOME closes in 102d 20h26 Feb 2027, 03:00 UTC · via Poké Transfer to a Gen 5 game → Poké Transporter → Pokémon Bank

Breeding odds

• Full odds 1 in 8,192
• Masuda method 1 in 1,638

• Evolve Shellos (East Sea)Evolution

  Level an East Sea Shellos (caught east of Mt. Coronet) up to 30.

  Researched, awaiting review · checked 7 Oct 2026 · pokemondb.net

  Something wrong?

  Shiny: yes

Transfer to HOME closes in 102d 20h26 Feb 2027, 03:00 UTC · via Poké Transfer to a Gen 5 game → Poké Transporter → Pokémon Bank

Wild odds

• Full odds 1 in 8,192
• Poké Radar chaining up to 1 in 200 (chain 40+ · grass only)

Breeding odds

• Full odds 1 in 8,192
• Masuda method 1 in 1,638

• Routes 213, 222, 224 and 230Wild

  The blue East Sea form is the one found east of Mt. Coronet.

  Researched, awaiting review · checked 7 Oct 2026 · serebii.net

  Something wrong?

  Shiny: yes