I don't think I've heard of this before, but someone is building "The Oregon Aquarium" out on SE Milwaukie Blvd in the old Black Angus restaurant building. It opens Dec 10 for members and Dec 15 for general public. In only know what is on their website which can be bound at http://portlandaquarium.net/
It's a privately funded project, I hope it succeeds.
Anyone know any more about it?