Submarine Wahoo Discovery
What Happened to the WWII Submarine Wahoo (SS-238)?

Discover the fate of the WWII submarine Wahoo (SS-238), sunk in 1943 in the La Perouse Strait and found in 2006 after decades of mystery.

Seikan Tunnel Exploration
What Is the Longest Underwater Tunnel in the World?

Discover the Seikan Tunnel in Japan, the world's longest underwater tunnel connecting Honshu and Hokkaido beneath the Tsugaru Strait.