I think this is one of the most underrated attractions at Tokyo DisneySea. To me, it's a full-blown E-ticket attraction that improves on many aspects of the original Submarine Voyage at Disneyland. Especially after they added an interactive element a few years ago for each guest to explore; the joystick controlled light. The special effects are amazing and the sets are extremely beautiful. Very detailed. I think the biggest criticism is that it's too short at only 5 minutes compared to the original 8.5 minutes, but I feel it makes up for it by condensing it into a more stimulating and impressive experience. It, along with Journey to the Center of the Earth, are one of the best Disney attractions ever in my opinion.