The organic Corsair

Birdeh

Beach Birds

Peeko

Lugia

Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine Mine

Pikachu's brother, freakachu

WhItE pEliCaN

Beakbird

The most rare Water type in Hoenn. It's totally not abundant in every water route.

I haven't run into a single one during my Emerald playthrough.