There are director buses from Portland Oregon to the Seattle Aquarium

Hello María, unfortunately there are no direct buses to the aquarium, however, there are terminals near the aquarium, there is a greyhound terminal in the train station that is attached to the Century link stadium and from there to the aquarium you will walk 15 minutes. The aquarium is on Av. Alaska and the stadium is between 1 and 4 a.

There are no direct buses