Quick clarification...
The aquarium portion of the Seas pavilion remains open, as does the Turtle Talk with Crush show and the Coral Reef restaurant. The clammobile ride portion is not yet open, and apparently won't be in time for your trip.
Just wanted to make sure that you didn't think the whole shebang was closed (especially since all you'll see is that huge construction wall in front of the traditional entrance to the pavilion).