#tunnel (2 Posts) Viral Video: Riding an Escalator into the Water Makes THIS Aquarium a Hot Topic The Shanghai Ocean Aquarium is a must-visit with its world's longest underwater tunnel and diverse marine life exhibits. 2023.12.25 20:11 China's Shocking Infrastructure Fail: Underwater Tunnel Floods in 15 Days After It Opened China's ambitious underwater tunnel, touted to last a century, floods just 15 days after opening, raising safety concerns. 2023.12.12 20:59