Seaking 21/109

Pokemon card from Ruby & Sapphire · released Jul 1, 2003

~$27.01 Reverse Holofoil

as of Oct 30, 2026 · Buy links are affiliate links.

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Seaking 21/109 Ruby & Sapphire Pokemon card

Seaking is a Rare Water-type Stage 1 Pokemon card, number 21/109 in Ruby & Sapphire (released Jul 1, 2003), illustrated by Hajime Kusajima. Its TCGplayer market price was ~$27.01 for the reverse holofoil finish on Oct 30, 2026. Between Oct 1 and Oct 30, 2026, its Reverse Holofoil TCGplayer market price went from ~$21.65 to ~$27.01, up 24.8%.

Prices by finish

Finish	PriceMarket price	Low	Mid	Buy
Normal	~$1.01	~$0.74	~$1.06	Buy Normal on TCGplayer (opens in a new tab)Search eBaySearch AmazonCardNexus
Reverse Holofoil	~$27.01	~$13.23	~$27.33	Buy Reverse Holofoil on TCGplayer (opens in a new tab)Search eBaySearch AmazonCardNexus

TCGplayer market prices per finish, as of Oct 30, 2026. A guide, not an appraisal; condition and grading change real-world value. Buy links are affiliate links.

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Graded copies on eBay

Graded prices vary a lot by grade. These links search current listings.

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Card details

Set	Ruby & Sapphire
Number	21/109
Rarity	Rare
Type	Water
HP	70
Stage	Stage 1 — evolves from Goldeen
Artist	Hajime Kusajima
Format legality	Not legal in Standard or Expanded
Finishes	Normal · Reverse Holofoil

What the codes mean

Card number21/109Card 21 of the 109 in the main Ruby & Sapphire list.
Set symbolThe small Ruby & Sapphire symbol identifies the set. Cards from before Scarlet & Violet print a symbol instead of a set code.
Regulation markNo regulation mark. Cards before Sword & Shield (2020) have none.
RarityRare: a black star.
Illustrator“Illus. Hajime Kusajima” names the artist who made the art.

How to read a Pokemon card →

Attacks & abilities

Water ArrowChoose 1 of your opponent's Pokémon. This attack does 20 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)

Fast Stream30Move 1 Energy card attached to the Defending Pokémon to the other Defending Pokémon. (Ignore this effect if your opponent has only 1 Defending Pokémon.)

Weakness: Lightning ×2 · Retreat cost: 0