Horsea is card #49 of 62 in Fossil (1999), a Common illustrated by Mitsuhiro Arita. At about $2.34 it is the #55 most valuable card in the set. In a Fossil booster it turns up about once every 2 packs. It is one of 28 Horsea cards printed so far.
1999Fossil
2003Aquapolis
2006Holon Phantoms
2010HS—Unleashed
2015Primal Clash
2018Dragon Majesty
2022Lost Origin
2024Shrouded Fable

















An ungraded Horsea from Fossil sells for about $2.34. A PSA 10 is worth more, roughly $30.42 by our estimate, and a PSA 9 around $9.36.
It is a Common, and it shows up about once every 2 Fossil packs.
Mitsuhiro Arita drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Fossil 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.