The 2007 Secret Wonders Reverse Holo Gastrodon East Sea card (#8) is a sought-after Stage 1 Pokémon TCG collectible featuring unique Water-type gameplay.
2007 • Pokémon • Secret Wonders
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Raw / Ungraded
PriceCharting Price Guide · Guide Estimate evidence · captured Oct 7, 2026
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Each point is the last stored observation that day for this printing, condition, grader, autograph status and source. Gaps mean no observation; guide estimates and asking prices are not completed sales.Released in 2007 as part of the Secret Wonders expansion, the Gastrodon East Sea card serves as a distinctive collectible for Pokémon Trading Card Game enthusiasts. As a Reverse Holo rarity, this card offers a unique visual finish that contrasts with standard foil treatments, making it a favorite among finish collectors and those seeking to complete the Secret Wonders base set. Card number 8, illustrated by Kazuyuki Kano, captures the essence of the East Sea variant of this popular Pokémon. From a gameplay perspective, Gastrodon East Sea is a Stage 1 Water-type Pokémon that evolves from Shellos East Sea. It boasts 100 Hit Points and offers strategic depth through its Osmotic Pressure ability, which allows players to move damage counters between Gastrodon East Sea and its West Sea counterpart. The card’s WaterColorlessColorless attack, Dwindling Wave, delivers 80 damage, modified by the number of damage counters present on the Pokémon itself. This interplay of mechanics makes it a memorable piece of the 2007 era, appealing to players who appreciate the unique evolution lines and tactical options introduced during the Diamond & Pearl block. For collectors, the Secret Wonders set represents a pivotal moment in TCG history, introducing new Pokémon and refined card designs. Gastrodon East Sea stands out not just for its gameplay utility but also for its place in the broader narrative of Pokémon evolution mechanics. The Reverse Holo treatment adds an extra layer of desirability, as these cards were printed in lower quantities than common or uncommon cards, increasing their appeal for those building specialized collections. Whether you are drawn to the nostalgic design of the 2007 era or the specific strategic niche Gastrodon occupies, this card remains a staple for serious collectors.
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The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
The core identity of the card within the set.
The subject, team, league, and sport context tied to this card.
Featured
Gastrodon East Sea
Game
Pokémon
Rarity, print treatment, and game-specific stats for this card.
Holo Rare
Kazuyuki Kano
Card Stock
English
Reverse Holo
100
Water
Stage 1
43
Shellos East Sea
Grass +30
Lightning -20
4
423
Abilities, attacks, oracle text, and flavor text printed on the card.
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.
Attack: Dwindling Wave (80-)
Does 80 damage minus 10 damage for each damage counter on Gastrodon East Sea.
It has a pliable body without any bones. If any part of its body is torn off, it grows right back.
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