East Shellos

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

• East Province (Area One), South Province (Area Five)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 (Tranquility Cove, 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 213 and 224Wild

  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)

Raid odds

• Full odds 1 in 4,096

Breeding odds

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

• Galar Mine No. 2, Motostoke Riverbank, Bridge Field, Giant's Cap and other areasWild

  Every Shellos in Galar is the East Sea form.

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

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

• Breed GastrodonEgg

  The East Sea form comes from breeding the wild Gastrodon found around Poni Island; the in-game trade only gives the West 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

Breeding odds

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

• Breed GastrodonEgg

  Breed an East Sea Gastrodon at the Paniola Ranch nursery; the baby keeps 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

Wild odds

• Full odds 1 in 4,096
• Chain fishing up to 1 in 100 (chain 20+ · fishing only)
• Horde encounters 1 in 820 (hordes only)

Breeding odds

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

• Route 110Wild

  Hidden Pokémon found with the DexNav; it only starts appearing after the National Pokédex upgrade late in the story.

  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

• Nimbasa CityIn-game trade

  Lv. 50

  Traded by Curtis (female player character) once roughly fifty Xtransceiver calls have been made after finding the dropped Xtransceiver in Nimbasa City; level 50 with its Hidden Ability. Sources disagree on whether it can be shiny.

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

  Something wrong?

  Shiny: unknown

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

• Route 213, Pastoria City, Route 212 (southern part)Wild

  The East Sea form is the one met east of Mt. Coronet; the form is fixed by where it is caught.

  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 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 and 224Wild

  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