OLC has announced that a new attraction will be opening at Tokyo DisneySea in spring 2017. Themed after Finding Nemo and Finding Dory, this is replacing the Storm Rider attraction in Port Discovery which is scheduled to close in May 2016.
Boarding a submarine that “shrinks” to the size of a fish, Guests can explore the vast underwater world from the same point of view as Nemo and Dory. Guests can meet different characters and make new discoveries when they ride.
Source: OLC Official Website