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  2. Curious Cat Explores Underwater Tunnel Aquarium

    Curious Cat Explores Underwater Tunnel Aquarium

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  3. Diver Squeezes Through Underwater Tunnel

    Diver Squeezes Through Underwater Tunnel

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  4. Russian, Chinese Businessmen Considering Secret Underwater Tunnel Connecting to Crimea

    Russian, Chinese Businessmen Considering Secret Underwater Tunnel Connecting to Crimea

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  5. Diver risks one-breath swim through deep underwater tunnel

    Diver risks one-breath swim through deep underwater tunnel

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  6. Bangladesh set to open first under-river tunnel project built with Chinese funding and contractors

    Bangladesh set to open first under-river tunnel project built with Chinese funding and contractors

    27.7K
  7. Floating underwater tunnels: Norway earmarks $25bn for floating submerged tunnel plan - TomoNews

    Floating underwater tunnels: Norway earmarks $25bn for floating submerged tunnel plan - TomoNews

    46
  9. 🚇 "The Amazing Channel Tunnel: Engineering Beneath the Waves" 🌊

    🚇 "The Amazing Channel Tunnel: Engineering Beneath the Waves" 🌊

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  10. Underwater tunnel railways

    Underwater tunnel railways

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  11. Hole in Rocks by the Sea Turns into Underwater Tunnel

    Hole in Rocks by the Sea Turns into Underwater Tunnel

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  12. Swimming Through an Underwater Cave

    Swimming Through an Underwater Cave

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  14. Palm Jumeirah Tunnel underwater

    Palm Jumeirah Tunnel underwater

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  15. Underwater Cave Diving - "Lost Student Tunnel" Jackson Blue Springs

    Underwater Cave Diving - "Lost Student Tunnel" Jackson Blue Springs

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  16. A family of three walks hand in hand through an underwater tunnel at an aquarium

    A family of three walks hand in hand through an underwater tunnel at an aquarium

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  17. Mysterious underwater tunnels at Bloody Bay Wall, Cayman Islands

    Mysterious underwater tunnels at Bloody Bay Wall, Cayman Islands

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  20. Lady Free-Dives Into Underwater Tunnel

    Lady Free-Dives Into Underwater Tunnel

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  22. The Chinese bridge-tunnel set 10 world records

    The Chinese bridge-tunnel set 10 world records

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  23. The Miami Zoo has an underwater tunnel for the closest encounter with a crocodile.

    The Miami Zoo has an underwater tunnel for the closest encounter with a crocodile.

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  24. Exploring Underwater Tunnels Gets Sketchy

    Exploring Underwater Tunnels Gets Sketchy

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