01Card Stats

Stage 1 (evolves from Shellos East Sea)

HP 100

TypeWater

RarityRare Holo

IllustratorKazuyuki Kano

WeaknessGrass +30

Retreat●●●●

SetSecret Wonders

Released2007

02Editions and Print Runs

Modern print era — no 1st Edition or Shadowless variants exist for cards printed after the WotC era.

Unlimited

How to spot it: Standard modern card frame; no edition stamp.

All copies share the same Unlimited print frame.

04Variants and Foiling

Rarity tiers: Rare Holo
Foiling: Holo version with the holo pattern applied to the artwork. Reverse-holo parallel exists with the holo pattern applied to the background.
Alt art / specials: No full-art, secret rare, or alternate-art version documented for this print.

05Language and Regional Versions

English: Standard English release.
Japanese: Released in the equivalent Japanese set.
European: Localized European prints exist with translated text.
Other: No documented language-exclusive errors or major regional variants.

06Current Market Value

Holo	~$9.47 TCGplayer market (asking-price proxy); eBay solds may differ — verify current listings.
Reverse Holo	~$11 TCGplayer market for the reverse-holo parallel (asking-price proxy).

TCGplayer market is an asking-price proxy and can run above realized eBay sold prices; verify against recent solds before buying or selling.

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07Why Collectors Want It

Gastrodon — Pokemon TCG catalog (Pokedex #423).
Required for any complete Gastrodon master set across eras.
Collectors of the Secret Wonders set need this card to finish it.

08Competitive Playability

Tier: Niche

Stage 1 Gastrodon with 100 HP; top attack near 80 damage — playable in casual or rogue lists, not a competitive staple.

09Card Moves and Abilities

Ability: Osmotic Pressure

Once during your turn (before your attack), if you have Gastrodon West Sea in play, you may move up to 3 damage counters from Gastrodon East Sea to 1 of your Gastrodon West Sea.

Dwindling Wave Cost: Water + Colorless + Colorless · 80- damage

Does 80 damage minus 10 damage for each damage counter on Gastrodon East Sea.

Weakness: Grass +30
Resistance: Lightning -20
Retreat cost: 4

10Grading and Population

PSA 10 estimate: Modern Common/Uncommon — most copies are not graded because raw value rarely justifies the fee.

Graded populations stay low; usually collected raw or sleeved rather than slabbed.

Other graders: Negligible BGS/CGC submission volume.

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Gastrodon East Sea