A very good question karis. While going through the entire collection of cards I tried to select cards that could theoretically be "fished" out of water. Purify I'll admit is questionable along with some others, but fishing a marine creature or a container of some sort is an understandable idea.
If you have better suggestions for a card that can be fished out please go ahead and post it. But please keep in mind that we can't have a large amount of
creatures being spawned for 1
(though I'm considering raising the cost).
Think outside the box, and following a similar format the next card in the series is the
Gold Digger. Thank you for your interest.