# Seaking #59/147 — Aquapolis

## Summary

Seaking is a Gen I Water type with a modest fan following, mostly among Kanto loyalists who like the evolved Goldeen line. As an Aquapolis uncommon it was a plain mid-tier pull with no chase appeal, and Flail's damage-counter gimmick kept it a casual curiosity rather than a competitive pick. The modelled guide sits at $24, up 30% over 30 days on 6 copies traded, with 303 days of inventory on the board; a CGC 10 brings $45, 1.9 times raw, but PSA does not split this card’s population by finish, so no gem rate can be read for it.

## Identity

| Field | Value |
| --- | --- |
| Set | Aquapolis |
| Number | 59/147 |
| Rarity | Uncommon |
| Era | WOTC |
| Illustrator | Sumiyoshi Kizuki |
| Release date | 2003-01-15 |
| Image | Unavailable |

## Card details

| Field | Value |
| --- | --- |
| Card type | POKEMON |
| Stage | Stage1 |
| Evolves from | Goldeen |
| HP | 70 |
| Types | Water |
| Attack: Flail | cost Colorless/Colorless — damage 10× — This attack does 10 damage times the number of damage counters on Seaking. |
| Attack: Undulate | cost Water/Colorless/Colorless — damage 30 — Flip a coin. If heads, during your opponent's next turn, prevent all effects of attacks, including damage, done to Seaking. |
| Weakness | Lightning x2 |
| Retreat | 1 |
| Legal | Standard no · Expanded no |
| Pokédex entry | [Seaking #119](https://cardboardalpha.com/pokemon/pokedex/seaking) |
| Finishes | Normal, Reverse Holo |
| Languages | EN |

## Current stats

- Headline price: **$24.03** (ITEM_MEDIAN; modelled guide price) — as of 2026-10-15T21:38:59.108Z
- Headline basis: MODELLED_GUIDE — The venue’s published daily market guide, which the venue itself declares MODELLED. Nothing is confirmed to have traded at it, no copy is listed at it, and it is not our estimate — it is theirs.
- 24h change: n/a · 7d change: n/a — as of 2026-10-15T21:38:59.108Z
- Floor delivered ask: $12.77 — as of 2026-10-15T21:38:59.108Z
- Quant score: 64/100, regime ILLIQUID_UNKNOWN — as of 2026-10-15T21:38:59.108Z — 4 of 11 inputs · 38% weight · -31% confidence

## Provenance

- Catalog — observed 2003-01-15T00:00:00Z, confidence 98%
- Live ask — observed 2026-10-12T08:47:13.256Z, confidence 90%
- Open auction — observed 2026-10-14T07:05:16.587Z, confidence 90%
- Guide price (modelled) — observed 2026-10-15T00:00:00.000Z, confidence 90%
- Price statistic — observed 2026-09-28T00:21:12.529Z, confidence 90%
- Confirmed sale — observed 2026-09-20T04:06:14.110Z, confidence 85%
- Inventory count — observed 2026-09-28T00:21:12.528Z, confidence 70%
- Population census — observed 2026-09-09T23:05:24.253Z, confidence 60%

## Links

- [View on Cardboard Alpha](https://cardboardalpha.com/pokemon/aquapolis/seaking-59)
- [JSON snapshot](https://cardboardalpha.com/api/terminal/raw~tcgdex%3Aecard2-59%3AEN%3ANORMAL~NM)