Among the changes made to the California attraction were:
A number of static fish figures were added surrounding the first screen featuring Ariel and as well in the tunnel heading towards the Under the Sea sequence.
The Under the Sea sequence received the most major changes as it now relies heavily on black light like a traditional Disney dark ride (for example, Peter Pan’s Flight). This was done to make the scene darker and to hide the very visible lighting rigs that more frequent park visitors have complained about.
Several other scenes are now relying on black light as well, though it isn’t as noticeable as in Under the Sea. Again, this was to hide infrastructure visible to guests during the ride.
All of these changes and possibly more are expected to be made to the Walt Disney World counterpart.
You can see video of the changes made to the California version of the ride in our video: