Marill is card #53 of 147 in Aquapolis (2003), a Uncommon illustrated by Yukiko Baba. At about $40.50 it is the #123 most valuable card in the set. In an Aquapolis booster it turns up about once every 20 packs. It is one of 26 Marill cards printed so far.
1999Wizards Black Star Promos
2001Southern Islands
2003Aquapolis
2004Team Rocket Returns
2007Diamond & Pearl
2015Primal Clash
2017Burning Shadows
2023Paldea Evolved

















See the full Aquapolis card list
An ungraded Marill from Aquapolis sells for about $40.50. A PSA 10 is worth more, roughly $526 by our estimate, and a PSA 9 around $162.
It is a Uncommon, and it shows up about once every 20 Aquapolis packs.
Yukiko Baba drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Aquapolis booster packs in your browser with the set's real pull rates and keep what you pull in a digital binder. No real cards, nothing to buy.