Shellos can use one of two Abilities: Sticky Hold, which prevents its hold item from being stolen, knocked away or switched, or Storm Drain, which in Double and Triple Battles, draws all Water-Type Moves to the Pokémon with the ability instead of who it was targeted at, absorbing the move and increasing its Special Attack by one stage. Its Hidden Ability is Sand Force, which increases the power of its Ground, Rock, and Steel Type moves in a Sandstorm by 33%.
Shellos gain the opportunity to evolve into Gastrodon starting at Level 30.
Shellos has two separate forms, the East Sea and the West Sea forms.The west sea form, its upper body is pink, and its lower body is white. There are spikes on its back, and there is a circle of pink sac-looking structures on it. The East Sea version is green on the bottom and blue on the top. It has two wing-looking flaps on its back, and its head has two structures similar to the West Sea Shellos, but turned sideways resembling horns.
Shellos has no gender differences.
The form that Shellos takes in Diamond, Pearl and Platinum depends on the side of Sinnoh that it is encountered in, and its form cannot be changed once captured. Shellos appear at Routes 205, 213, 218, Valley Windworks and Fuego Ironworks in Diamond, Pearl and Platinum. Shellos also appear at Routes 221 and 224 in Diamond and Pearl, and Route 212, Pastoria City and Canalave City in Platinum. The only way to obtain a Shellos in Heart Gold and Soul Silver is to catch one on the Pokéwalker course Stormy Beach.
A Shellos can be obtained in Black 2 and White 2 as part of an in-game trade in Nimbasa City. The trainer will request any Pokémon in return. Male trainers will receive a West Sea Shellos, while Female trainers will receive an East Sea Shellos. Both will be holding an Old Gateau.
In Pokémon X and Y, the only way to obtain Shellos is to breed a Gastrodon. In Pokémon Omega Ruby and Alpha Sapphire, it can be found in the wild at Route 103 and Route 110 using the DexNav feature of the PokéNav Plus, after the defeat or capture of Groudon or Kyogre.
In Pokémon Sun and Moon, Shellos can only be obtained by breeding a Gastrodon.
West Sea Shellos can be found at Drenched Bluff B1-B6, while East Sea Shellos appear at Beach Cave B1-B4 in Explorers of Time, Explorers of Darkness and Explorers of Sky. Shellos appears in all three versions of Mystery Dungeon 3, appearing at Secret Archipelago, Secret Highland and Secret Rockmountain 1F-10F, with both East Sea Shellos and West Sea Shellos appearing on different floors.
Shellos can be found at Vientown Beach and Marine Cave in Pokémon Ranger: Shadows of Almia. In Pokémon Ranger: Guardian Signs Shellos appears at Curl Bay on Renbow Island in the Present, but doesn't appear in the Past Missions.
Shellos appears at Desolated Ruins Beach 3-1 and Sunny Seashore Beach 4-3 in Pokémon Rumble Blast.
Trading Card Game
East Sea Shellos are listed as Common Cards in the Secret Wonders, Majestic Dawn and Rising Rivals sets, while West Sea Shellos are listed as Common Cards in the Secret Wonders and Rising Rivals sets.
A Wild East Sea Shellos appeared during the episode Gateweay to Ruin, the only appearance of a Wild Shellos in the Anime as of writing.
Wild East Sea Shellos appeared during the film The Rise of Darkrai, the only appearance for Shellos in the films as of writing.
Shellos' Manga Information is unknown as of writing.
Shellos is in the Not Fully Evolved Tier of Competitive Battling as it is an unevolved Pokémon.
Transfer Only Z-Moves
Via Move Tutor (Black 2/White 2)
Via Dream World
Generation IV Exclusive Moves
- TM43: Secret Power
- TM58: Endure
- TM78: Captivate
- TM83: Natural Gift
- HM05: Whirlpool (Heart Gold/Soul Silver Only)
Via Move Tutor
Platinum/Heart Gold/Soul Silver
Heart Gold/Soul Silver
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