>>31795757Yeah Araquanid's a little weird that way.
The actual thing it's based on is a spider that lives underwater by making air bubbles.
But when you send it out in battle of course it's going to be on land, so they reversed the gimmick.
Then, to provide an actual REASON why it needs the bubble, they said it's so it can breath. But no Water pokémon apparently ever had any difficulty breathing on land, so it's a little awkward.