Fang Lee-shing, director of the Preparatory Office of the NMMBA, says that the 80-meter long undersea tunnel is particularly good at giving humans the sensation of being inside this other world. Water flows all around the tunnel, and the outer walls of the tank are invisible (just as the sea itself has no visible limit to something in it), while various kinds of marine life swim over the heads of visitors.
館長方力行表示，為了讓民眾更貼近海洋世界，體驗被流動剔透的水體層層包圍的感受，在海洋館八十公尺長的海底隧道中，是望不到盡頭的廣大海水，以及從參觀者頭頂游過的各種海生物。